How to Get a Price Adjustment at Costco, Step by Step

Costco's price adjustment isn't complicated once you know the steps — the hard part is remembering to check before your 30 days run out. This guide covers both paths: buying in-warehouse and buying on Costco.ca. For the full policy details (what's excluded, the exact window, and where Costco documents it), see our complete Costco price adjustment policy guide.

In-warehouse purchases, step by step

1. Confirm the price actually dropped. Check the shelf tag or ask a staff member for the current price on the exact same item.
2. Find your receipt. Don't have it? Costco can usually look up your purchase by membership number, so bring your card either way.
3. Go to the Membership Counter — typically near the entrance/exit, not a regular checkout.
4. Tell staff you'd like a price adjustment and show them the item and (if you have it) the receipt.
5. Staff verify the purchase date is within 30 days and the item is still in stock at the lower price.
6. Refund is issued to your original payment method, usually on the spot.

Costco.ca online orders, step by step

1. Sign in to Costco.ca and open Order History.
2. Find the eligible order — it needs to be within 30 days of the order date.
3. Open the order details and look for the Request a Price Adjustment link or form.
4. Submit the request. Costco typically processes it as a credit within about 5–7 business days.

What to bring (in-warehouse)

• Your Costco membership card — this alone is often enough for staff to look up eligible purchases.
• The physical or digital receipt, if you have it — speeds things up.
• The item, or at minimum the exact item number/name — helpful if the product has multiple sizes or variants at different prices.

Common mistakes that cost people their refund

• Waiting too long. The 30-day window is firm — day 31 is too late, even if the price is still low.
• Confusing it with price matching. Costco only adjusts against its own price drops, not competitors' prices.
• Assuming it's automatic. Nothing about this policy is proactive — Costco will not contact you when a price drops. You have to notice and ask.
• Missing out-of-stock items. If the lower-priced item is no longer in stock when you ask, the adjustment can be denied.
• Forgetting about big one-off sale events (Black Friday-style pricing), which are often treated as exceptions.

Skip the manual checking

If you shop Costco regularly, manually re-checking prices on every item you bought — before each one's 30-day window closes — doesn't scale. PriceBack reads your receipt once, tracks every item's price automatically, and notifies you the moment one is eligible for a refund, with everything you need to bring to the Membership Counter or submit online. You can start with 75 free credits, no subscription required.