Costco doesn’t hide deals, but some of the best savings come from knowing the rules behind the signs, services, and membership perks. A few smart moves like using a Shop Card, timing a price adjustment, or letting Concierge Services do the heavy lifting can turn a routine run into real value. These tips lean on official policies, not rumor, so they work nationwide with only minor local quirks. Keep this list handy in your phone and you’ll shop faster, skip fees, and stretch that Kirkland cart farther.
Table of contents
- 1. Watch for the asterisk and odd price endings
- 2. Use the 30-day price adjustment instead of returning
- 3. Know where returns are limited, electronics and a few others
- 4. Add a free household card for a second shopper
- 5. Let non-members shop with a Costco Shop Card
- 6. Save your carts and your time with the digital membership card
- 7. Executive members: stack the 2% reward (and know the fine print)
- 8. Costco Travel can pay twice 2% reward plus card cash back
- 9. Skip guesswork at the pump and yes, Shop Cards work for fuel
- 10. Free air for your tires, same hours as the gas station
- 11. Pharmacy access without a membership (in store and online)
- 12. Same-day delivery has a markup, 2-day pantry often doesn’t
- 13. Use Concierge Services for a free extra year of warranty
- 14. Pull up in-warehouse receipts in your account
- 15. Don’t price-match, just compare channels
1. Watch for the asterisk and odd price endings
That tiny asterisk in the upper-right corner of a shelf tag signals an item likely won’t be reordered at that warehouse, so stock up if you love it. Price endings can also hint at deals: .99 often means regular price, while off-endings like .97 can indicate a markdown specific to that location. Clearance isn’t guaranteed to drop further, so if supply looks thin, don’t wait. Because these quirks aren’t shouted from the food court, they’re a quiet edge for shoppers who know the code.
2. Use the 30-day price adjustment instead of returning
If something you bought just went on sale, request a price adjustment rather than lugging it back. For eligible purchases that drop in price within 30 days, Costco will credit the difference no restocking drama, no repacking the SUV. You can submit the request online for Costco.com orders, and warehouses can help with in-store purchases. It’s the cleanest way to match promos you miss by a week, and it keeps hot sellers in your cart instead of the return line.
3. Know where returns are limited, electronics and a few others
Costco’s satisfaction guarantee is famous, but a handful of categories do have clocks: most major electronics carry a 90-day return window, and some special items have specific rules. For almost everything else, returns stay flexible and easy, especially if you saved your receipt or can pull it up in your account. Skimming the short list of exceptions saves time and keeps surprises off the customer-service counter.
4. Add a free household card for a second shopper
One membership can carry two adults at the same address: the primary member and one free household member (16+). That extra card means someone else can legally do the midweek Costco run, pick up prescriptions, or grab gas without you. Set it up online in Account Details, then the household member can snap a photo at the membership desk and they’re set. It’s the easiest way to share perks without sharing a wallet.
5. Let non-members shop with a Costco Shop Card
Got a friend or college kid who isn’t a member? Load a Costco Shop Card for them. Non-members can use Shop Cards to buy in the warehouse, at the pump, and on Costco.com, even though only members can reload them. It’s a tidy workaround for occasional shoppers, gift-givers, or visitors who just need one big stock-up trip.
6. Save your carts and your time with the digital membership card
The Costco app puts your membership barcode, rewards info, and even payment (when linked to an eligible card) on your phone. It also shows in-warehouse receipts for the past two years and helps you find hours for each department before you drive. If you’re prone to forgetting your wallet or paper card, this keeps the line moving and your rebates visible.
7. Executive members: stack the 2% reward (and know the fine print)
Executive Membership adds a 2% annual reward (up to $1,250) on qualified Costco, Costco.com, and Costco Travel purchases. If your year’s reward doesn’t beat the upgrade cost, remember Costco’s membership guarantee you can downgrade. It’s a simple math check most shoppers forget, and it can turn big seasonal purchases into real money back at renewal.
8. Costco Travel can pay twice 2% reward plus card cash back
Booking through Costco Travel often brings bundled perks, and Executive Members earn the 2% reward on qualifying travel (applied after the trip). Use the Costco Anywhere Visa® by Citi and you can stack additional cash back on those purchases. Check the exclusions taxes and third-party add-ons typically don’t count, then let the rewards cover some of your next renewal.
9. Skip guesswork at the pump and yes, Shop Cards work for fuel
Costco’s fuel stations are member-only, but there’s an exception: anyone can buy gas with a Costco Shop Card. The lanes run one-way and the hoses reach either side of your vehicle, which keeps lines moving during rush hours. It’s a quiet way to share low gas prices with non-member family or help a teen driver fill up without handing over your main card.
10. Free air for your tires, same hours as the gas station
Most warehouses have a self-inflation station at the Tire Center, and it’s open the same hours as the gas station. That means you can top off tires right after fueling instead of hunting down a paid air machine across town. Tiny habit, real savings, and better mileage and tread life.
11. Pharmacy access without a membership (in store and online)
You don’t need to be a member to fill prescriptions at Costco’s pharmacy counters or via Costco’s online pharmacy options. Members do get extra perks, but if a friend or parent needs a one-off fill, they can head straight to the pharmacy window and pay with common methods. It’s a little-known exception that can save time and money.
12. Same-day delivery has a markup, 2-day pantry often doesn’t
Costco’s Same-Day delivery (powered by Instacart) prices are higher than warehouse prices and include service and delivery in the item costs. The 2-Day option for non-perishables ships to your door and waives the per-item surcharge on orders $75+, which can be cheaper for heavy pantry restocks. Know the difference before you click, Same-Day is speed; 2-Day is value.
13. Use Concierge Services for a free extra year of warranty
On many electronics and major appliances, Costco extends the manufacturer’s warranty to two years and offers free tech support through Concierge Services. That’s on top of Costco’s 90-day electronics return window and any optional Allstate plans you buy. If something glitches in year two, call Concierge first, they handle a lot before you ever need a service visit.
14. Pull up in-warehouse receipts in your account
No more shoebox of slips: link your membership in your Costco.com account to view and print in-warehouse receipts for the past two years. It’s perfect for appliance warranties, HSA records, or big returns when the paper went missing. Check the In-Warehouse tab under Orders & Purchases and change the date filter to find what you need.
15. Don’t price-match, just compare channels
Warehouse and Costco.com prices can differ, and Costco doesn’t price-match other sellers or even match warehouse to online. Instead of chasing matches, compare totals yourself: factor in shipping on Costco.com and the 2-Day delivery surcharges, or use Same-Day when speed matters. If a deal pops up after you buy, that’s what the price-adjustment window is for.
