ARTYOORAN / Shutterstock.com

Costco, Amazon, Target and Walmart are all retailers where you can pretty much buy anything you want, and usually at fair prices. However, there are extra steps you should take to ensure you’re actually getting a good deal when you shop and aren’t missing out on any special perks that these big-box stores offer.

2021 Small Business Spotlight: Check Out Our Small Business Stories, Plus the Nominated Businesses Near You
Shopping: 24 Ways To Make Money Off Your Shopping

Before your next shopping trip, make sure you aren’t making any of these costly mistakes.

Last updated: June 10, 2021

April 17, 2020 - Halifax, Canada - Costco Wholesale warehouse store located in the Bayers Lake retail park.

April 17, 2020 – Halifax, Canada – Costco Wholesale warehouse store located in the Bayers Lake retail park.

Mistakes To Avoid When Shopping at Costco

Costco is a bulk-buyer’s paradise — but not everything there is a good deal. Don’t make these mistakes when you shop at the warehouse store.

Check Out: Your Grocery Shopping Strategy During the Coronavirus Crisis

man with full costco cart

man with full costco cart

Not Making a List Ahead of Time

You’re sure to overspend when you go to Costco without a plan for what to buy.

“Whether you’re going into Costco for the first time or your 100th time, the vast warehouse of products can seem exciting and possibly, a little overwhelming. But like any shopping trip, making a list ahead of time is crucial, especially since Costco is mapped out to entice shoppers to buy more — things they likely don’t need — by placing and rotating items in different spots,” said Rebecca Gramuglia, retail expert at TopCashback.com. “Avoid impulse buys and plan ahead, and your wallet will thank you.”

See: 30 Ways Shopping Will Never Be the Same After COVID-19

nicotine bulk package in costco

nicotine bulk package in costco

Buying Everything in Bulk

You might equate bulk buying with getting a good deal, but this isn’t necessarily the case.

“Buying in bulk can be a great deal if you will use or consume the items purchased, but it can also make a dent in your wallet and/or trash can if you don’t use them,” Gramuglia said. “Before you buy, it’s important to analyze the cost per unit to see if it is worth buying the larger option.”

Prepare: The Items That You Should Continue To Stock Up On

kirland fish oil single purchase

kirland fish oil single purchase

Buying Something You Don’t Know You Like

“If you see an item that you want to try but it’s in bulk, hold off on purchasing it,” Gramuglia said. “You’re better off buying a single unit at your regular grocery store to see if you actually like the product before overspending on a larger quantity of something you may end up tossing in the garbage.”

Shopping: 30 Ways Shopping Will Never Be the Same After the Coronavirus

costco gold star member

costco gold star member

Paying Full Price for Membership

You can save on your membership by purchasing it through a cash-back site.

“Knock a few extra dollars off of your choice of membership by shopping through TopCashback.com,” Gramuglia said. “You can score $3 cash back on a Gold Star Membership purchase and $6 cash back on the Executive Membership purchase.”

See: Supply Shortages That May Happen Again

costco membership

costco membership

Not Upgrading Your Membership

Gold Star Executive membership costs $120 a year while Gold Star membership costs $60 a year, but you might be able to recoup the cost — and then some — with the executive membership’s 2% cash back annual reward. If you spend more than $250 a month at Costco, your rewards check for the year will be more than $60, so you’ll make up the price difference and then some.

Read: 50 Ways You’re Throwing Money Away

costco executive member

costco executive member

Not Taking Advantage of Price Adjustments

If an item you bought goes on sale within 30 days of your purchase, you can get the difference back as a price adjustment. Not taking advantage of this policy is basically throwing money away.

Read: Shopping Mistakes You’re Making and How To Stop

costco gift cards

costco gift cards

Not Stocking Up on Gift Cards — for Yourself

Costco sells gift cards at a discount, so it’s worth it to purchase them for yourself for restaurants and retailers that you frequent. You’re automatically saving when you shop or dine with the discounted gift card.

Read: 15 Times You Should Splurge, Settle or Skip When Shopping

costco computer aisle

costco computer aisle

Not Taking Advantage of the Costco Concierge Service

You already know that Costco has some of the lowest prices on electronics, but you might not know that your tech purchases give you free access to the superstore’s Concierge Service. Costco offers free technical support for members, as well as a two-year warranty on many electronics purchases.

Be Aware: What To Buy and Skip During the Coronavirus Pandemic

costco alcohol handle

costco alcohol handle

Buying Only Brand-Name Items

Don’t overlook Kirkland Signature items. For many products, Costco’s store brand is comparable to its name-brand counterpart.

See: 11 Things You Should Never Buy New

Costco pricing tag

Costco pricing tag

Not Paying Attention to Price Signs

You may not realize it, but there’s a lot of information about a product hidden in its price sign. Uproxx reports that the following prices and symbols have specific meanings:

  • Prices ending in .99 or .98: These products are retail price, and don’t provide savings over other store’s prices unless bought in bulk.

  • Prices ending in .89, .79, .69, .59, .49, .39, .29, .19 or .09: These are manufacturer deals, so you’re getting a lower price than you would elsewhere.

  • Prices ending in .97: These are items that are on sale because the store manager needs to move stock.

  • Prices ending in .88 or .00: This indicates a steeply discounted product.

  • Asterisk: Price signs marked with an asterisk in the top right corner indicate that it’s heavily discounted and will be discontinued, so now is the time to stock up.

Shopping: 50 Purchases Buyers Almost Always Regret

customers leaving costco

customers leaving costco

Avoiding Costco If You’re Not a Member

There are some Costo perks even nonmembers can take advantage of. This includes filling prescriptions at the pharmacy, which often has lower prices for drugs than elsewhere, CNBC reported. Nonmembers can also get flu shots and eye exams at Costco, purchase food at the food court and — in certain states — buy alcohol at Costco’s low prices.

Find Out: 24 Ways To Make Money Off Your Shopping

Amazon job growth

Amazon job growth

Mistakes To Avoid When Shopping on Amazon

If there’s something you want or need, there’s a good chance you can find it on Amazon. However, you might be paying too much for your purchases if you’re making any of these online shopping errors.

Keep More of Your Money: 30 Things You Should Never Buy Without a Coupon

girl browsing Amazon Prime Day on laptop

girl browsing Amazon Prime Day on laptop

Not Knowing When the Popular Sale Seasons Are

“It’s really easy to see something you like and purchase it on the spot — especially when Amazon makes checking out very convenient — but what if you knew it went on sale less than a month later?” Gramuglia said. “Seasonal items usually get marked down around the same time every year and sale events like Amazon’s Prime Day have similar items discounted every year. Typically, on Prime Day, you can expect prices to be at their lowest amount, even beating Black Friday on popular items from beauty, tech, home, kitchen and virtually every other category you can think of.”

Gramuglia notes that although Prime Day traditionally takes place during the first few weeks of July, there are reports that it may be moved to September this year.

Keep Reading: 17 Biggest Budgeting Mistakes You’re Making

Amazon subscribe and save

Amazon subscribe and save

Not Subscribing for Household Items You Buy Regularly

You’re missing out on a substantial discount on items you buy often if you don’t use this feature.

“With Amazon’s Subscribe & Save, you can save time and money on everyday items,” Gramulgia said. “From detergent to toilet paper, you can subscribe to receive shipments of the items you need on a regular basis for less. And for every five or more products in one auto-delivery, you can get as much as 15% or 20% off if you’re a Prime member on subscriptions to diapers, baby food and more.”

Check Out: 19 Effective Ways To Tackle Your Budget

Amazon packages in the mailbox, as more people are buying online and causing stock value to increase.

Amazon packages in the mailbox, as more people are buying online and causing stock value to increase.

Not Opting for Free No-Rush Shipping

“If you’re an Amazon Prime member and don’t need your order right away, consider choosing free no-rush shipping instead of free two-day shipping to earn rewards on future Amazon purchases,” Gramulgia said. “This is a great way to save money in the long run.”

Find Out: 50 Easy Things You Should Do To Save Money

Amazon Prime Rewards Visa Card.

Amazon Prime Rewards Visa Card.

Not Using an Amazon Rewards Visa Signature Card

“The Amazon Rewards Visa Signature Card or Amazon Prime Rewards Visa Signature Card is a must-have for any Amazon shopper,” Gramuglia said. “For every eligible purchase you make with an Amazon Rewards Visa Signature Card, you earn 3% back — or 5% back if you’re a Prime member with the Prime Rewards card — at Amazon.com and Whole Foods; 2% back at restaurants, gas stations and drugstores; and 1% back everywhere else.”

See: 50 Terrible Ways To Try and Save Money

person shopping on Amazon app

person shopping on Amazon app

Skipping ‘Today’s Deals’

You can find Amazon’s best deals and steals for new products in the “Today’s Deals” link at the top of any Amazon page.

“There you’ll be able to shop Amazon’s Deal of the Day and Lightning Deals — the latter is when you only get hours or just minutes to purchase a product on sale,” Gramuglia said. “This added browsing can score you more savings than you expect at Amazon.”

Tips: Things To Cut Out Right Now To Save Money During the Health Crisis

Cropped shot of a handsome young man shopping online while chilling on the sofa at home.

Cropped shot of a handsome young man shopping online while chilling on the sofa at home.

Assuming Amazon Is a One-Stop Shop

Although it may be convenient to buy everything on Amazon, it doesn’t always have the best prices.

“There are plenty of other online retailers that can give you a better price and discount,” Gramuglia said. “Before you check out, browse other major online retailers and compare prices to ensure you’re really getting the best deal.”

Read: 101 Easy Ways To Save Money Daily

man shopping on amazon

man shopping on amazon

Setting Up the One-Click Payment Option

“Yes, it makes things so much easier to buy an item with just one click, but it also makes it much easier to overspend,” said Julie Ramhold, consumer analyst with DealNews.com. “Ignore the impulse to make shopping too easy, and leave the one-click settings turned off. If you have to go through the entire process of adding the item to your cart, and choosing shipping, address and payment options, you’ll be less likely to buy something you don’t need.”

Helpful: How To Save Money During COVID-19

woman online shopping for clothes

woman online shopping for clothes

Not Comparing Prices for the Same Item in Different Colors

Amazon will sometimes have different prices for the same item in different colors based on the supply and demand for each color, CNBC reported. If the color doesn’t matter to you, click through the different options to find the lowest price.

Shopping Tips: The Worst Things To Buy at Walmart and Target

woman shopping on Amazon store

woman shopping on Amazon store

Ignoring Prices From Other Sellers

When you search for an item on Amazon, you don’t always see the best price for it on the main product page. On the right column of the product page, you will see a list of “other sellers on Amazon” and the prices they are selling the item for. In some cases, there are lower prices available.

Find Out: 16 Effective Ways To Trick Yourself Into Saving Money

young woman using a store credit card

young woman using a store credit card

Not Checking the Coupon Box

Applying coupons on Amazon is as easy as checking a box underneath where the item price is listed — but if you don’t look out for it, you could miss it and miss out on the savings.

Stop Now: 40 Supermarket Buys That Are a Waste of Money

couple applying for a credit card

couple applying for a credit card

Not Tracking Prices

Prices on Amazon fluctuate often, so it’s worth checking a price tracking site like CamelCamelCamel.com to see if the current price for an item you want is high or low. If you’re not in a rush to buy it, you can set an alert that will let you know when the price has dropped.

Read: 25 Ways To Save 20% More of Your Paycheck Without Even Trying

customers wait in line outside of target

customers wait in line outside of target

Mistakes To Avoid When Shopping at Target

With great quality items at fair prices, it’s hard not to love shopping at Target. But you could be spending too much money at the beloved retailer if you’re making any of these mistakes.

Save Money: 25 Things You Should Never Do With Your Money

Target RedCard

Target RedCard

Not Using Your Target RedCard

“If you love a bargain and receiving rewards simply for the shopping you would’ve done anyway, consider opening a credit card — or even a debit card — at Target,” Gramuglia said. “The Target RedCard gives users a 5% discount on all purchases, free shipping online and access to RedCard Exclusives including special items, gifts and promotions.”

You can even save 5% at any in-store Starbucks location when you use your RedCard, Gramuglia said.

See: Cutting Out These 25 Expenses Will Save You $16,142.08 a Year

Target app

Target app

Not Taking Advantage of Target App Coupons

“If you haven’t already, download the Target app to gain exclusive access to deals and coupons, browse weekly ads and place orders with Drive Up,” Gramuglia said. “It’s easier than ever to use coupons to save money and time when shopping through the Target app.”

The Ultimate Financial Planning Guide: Do It Like the Pros in 6 Steps

target customers shop for diapers

target customers shop for diapers

Not Stacking Coupons

“At Target, you can use several coupons per transaction unless the coupons indicate otherwise,” said Trae Bodge, smart shopping expert for TrueTrae.com. “You can even stack manufacturers’ coupons with Target coupons. Look for stackable coupons on Target.com, your local circular and on a deal site like Slickdeals.net, which has a page dedicated to Target coupons.”

Read: 33 Items You Do NOT Need To Buy During the Coronavirus Pandemic

HAGERSTOWN, MD - DECEMBER 12, 2015: Image of Target packages.

HAGERSTOWN, MD – DECEMBER 12, 2015: Image of Target packages.

Purchasing Items Right Away

You can sometimes save money by abandoning your online shopping cart.

“Stores like Target track our every move while browsing the internet, so when we leave a store’s page without making a purchase, they take note of it,” Gramuglia said. “If you wait a few days or so, you may receive a ‘We miss you!’ or ‘You forgot something!’ email from that store featuring a product you clicked on but didn’t buy, and sometimes a customized discount code, too.”

Check Out: The Effects of Coronavirus Panic-Buying

clearence end cap in target

clearence end cap in target

Skipping Over the Endcaps

There’s no one clearance section at Target, so it’s important to not overlook the clearance areas in the respective sections of the store.

“Target scatters their deals and steals throughout the store,” Gramuglia said. “And don’t ignore the endcaps! You can find some serious savings there.”

Read: 16 Ways To Save Money on Food Now That Prices Are Rising

Young Pretty Woman at Home, Using Laptop, Sufring the Internet, Online Shopping.

Young Pretty Woman at Home, Using Laptop, Sufring the Internet, Online Shopping.

Not Comparison Shopping

As with Amazon, you may be tempted to purchase everything you need during a single Target shopping trip — but Target doesn’t always have the lowest prices.

“You can likely save money simply by comparing your options,” Gramuglia said. “Before you purchase an item, check to see if the price is lower at another store, or if another store is having a sale.”

Options: 9 Best Grocery Delivery Services That Are Worth the Money

target cart going up escalator

target cart going up escalator

Not Planning Your Trip

As is the case with Costco, you should never go to Target without a shopping list.

“Target is one of those stores that’s really easy to walk out of with more than you intended — there’s even a term for it: the ‘Target Effect,'” Ramhold said. “A good way to combat this is to plan your trips in minute detail. It sounds overwhelming, but the app can make things much easier as it has a map function so you can pinpoint where the items on your list are. Make your list in the app, note where each item is, and then stick to that list to keep from walking out with five new throw pillows you don’t have room for.”

Be Aware: 12 Most Controversial Coronavirus Price Hikes

Target store drive up pick up only

Target store drive up pick up only

Not Utilizing the Option To Pick Up In-Store

Not everything on the Target app and site is available for in-store pickup, but if you only need a few things and they are available for pickup or drive up, consider using this functionality.

“If you opt for store pickup, you’ll go inside and go straight to the service desk to pick up your order when it’s ready, and if you opt for drive-up service, they’ll bring your order out to you,” Ramhold said. “This means you won’t even have a chance to be enticed by the cute and useful things in the Dollar Spot, or the selection of snacks up front.”

Read More: Cash and 21 Other Everyday Things Wiped Out by COVID-19

walmart customer in freezer section

walmart customer in freezer section

Mistakes To Avoid When Shopping at Walmart

Walmart is known for its ‘everyday low prices’ — but you still might be spending more than you need to be if you’re making these common Walmart shopping mistakes.

Find Out: Are You Spending More Than the Average American on 25 Everyday Items?

stack of Nike shoes boxes

stack of Nike shoes boxes

Buying Overpriced Items Through a Third-Party Seller

Like Amazon, Walmart.com sells items from third-party sellers.

“Before you buy something on Walmart.com, do a Google search to see if you are getting the lowest price,” Gramuglia said. “For example, a pair of Nike sneakers from a third-party seller on Walmart ranges from $89.22 to $98.52, whereas you can buy the exact same shoe at [a sporting goods store for half the price]. Keep in mind that Walmart does not price match for third-party sellers, so comparing prices prior to purchasing is a must.”

Read: 30 Important Money Habits for Your Financial Future

August 8, 2019 Mountain View / CA / USA - People shopping for back to school items in one of the Walmart stores; Banner advertising the low price leader status in California displayed above.

August 8, 2019 Mountain View / CA / USA – People shopping for back to school items in one of the Walmart stores; Banner advertising the low price leader status in California displayed above.

Buying Something Just Because the Price Seems Good

“Walmart is known for its prices, but whether you are shopping something full-price or on sale at a Rollback price, be sure to always comparison shop to make sure you’re actually getting the best deal,” Gramuglia said. “Walmart does price-match, but it needs to be the exact item and must apply to other limitations the store sets.”

You should also take quality into consideration before making a purchase.

“If you find yourself eyeing a product, like a sweater for $10, consider the quality, style, and longevity and usage of the product,” Gramuglia said. “Sometimes inexpensive products end up costing you more in replacing the item than it would if you bought a better quality product. However, you can also find quality products at a lower price, so be sure to weigh the pros and cons to make the best decision for your finances.”

Let Us Know: Do You Think the Minimum Wage Should Be $15?

Everyday Low Price in Walmart store

Everyday Low Price in Walmart store

Not Double-Checking the Price

“You may find a clearance item or full-priced item that you’ve been eyeing, but may want to put it back on the shelf because it’s out of your budget. But before you do that, double-check the price,” Gramuglia said. “Especially since items can be easily moved throughout the large store, always price check your items for a final verdict. Stores like Walmart are constantly running promotions and have items marked down, and may be running a deal that you don’t know about that can save you an extra few bucks. The price scanner will give you the most up-to-date cost.”

Learn More: How Long $1 Million in Savings Will Last in Every State

Walmart customers outside

Walmart customers outside

Shopping Too Late in the Day

The early bird gets the best deals at Walmart.

“Making the trip before 9 a.m. is a good idea since that is when everything has been neatly restocked and you have a better chance of getting what you want,” said Freya Kuka, founder of the personal finance blog Collecting Cents. “If you are a morning person, this is a great way to start the day.”

Don’t Miss: Retailers That Offer Free Shipping All Year

Great Value Walmart brand

Great Value Walmart brand

Overlooking Store-Brand Items

“Walmart has ‘Great Value’ options that are branded replacements; [opting for these] can help you save hundreds every month,” Kuka said. “In most cases, the brand is nothing but a name in comparison.”

Read: The Most Expensive Things You Can Buy on Amazon

Walmart seasonal aisle section

Walmart seasonal aisle section

Shopping for Seasonal Items Too Early

“Usually a month before the next major holiday rolls around, Walmart devotes at least one entire aisle to items for it. And yes, it can be tempting to grab a giant bag of Halloween-themed chocolate in mid-September, but if you wait until the day after the holiday, you’ll see incredible discounts that make it so much easier to get a bigger bang for your buck,” Ramhold said. “Granted, for things like that, you might need themed candies and items before the holiday itself, but we recommend getting only what you need ahead of time, and then treating yourself to goodies the day after the holiday.”

Find Out: 11 Ways Warren Buffett Lives Frugally

Walmart Rollback pricing on television

Walmart Rollback pricing on television

Thinking ‘Rollback’ Prices Are the Best Deal You’ll Get on an Item

“Rollback prices typically last around 90 days, but they aren’t actually sale or clearance prices — they’re just a slight price drop due to something like overstock,” Ramhold said.

More From GOBankingRates

This article originally appeared on GOBankingRates.com: The 37 Mistakes We Make When Shopping at Costco, Amazon, Target and Walmart