Costco Price Adjustment: What Counts as the Same Item?

Quick answer: Costco's price adjustment applies only to the exact same item you bought — same item number (shown on your receipt), same size, and same model. A different color is usually fine since color rarely changes the item number, but a different size, capacity, or model is a different item, even if it looks identical on the shelf. If the item number on the current tag doesn't match your receipt, it isn't eligible, no matter how similar the product seems.

Key takeaways

• Costco's item number — the 6- or 7-digit code on your receipt — is the real test for "same item," not the product name or brand.
• A price drop on a different size (say, 2-pack vs. 3-pack) or a different model number doesn't qualify, even for the same brand.
• Costco gives members a 30-day window from the purchase date to request a price adjustment, so item-matching only matters if you catch the drop in time.
• Seasonal and clearance-tagged items often get swapped for a new item number specifically so the old price doesn't carry over — we cover that in Costco Price Adjustment: A Guide to Seasonal Item Refunds.

What Makes Two Products the "Same Item" at Costco?

The item number is the deciding factor, full stop. Every product Costco sells carries a unique item number, printed on your receipt and on the shelf tag, and that number is what a membership counselor or online adjustment form checks against.

If the item number on today's price tag matches the item number on your receipt, you're looking at the same item — even if the packaging got a slight redesign or the marketing copy changed. If the item number is different, Costco treats it as a different product, period, regardless of how similar it looks.

This matters because Costco frequently reissues item numbers for products that look unchanged to a shopper:

• A TV gets a minor spec bump (better HDMI port, slightly different panel) and comes back with a new item number at a new price.
• A seasonal product (patio furniture, holiday decor) returns next year with a new number even if it's visually identical.
• A grocery item changes package size by even a few ounces and gets a new number.

None of those count as a price drop on "your" item — they're new items that happen to replace the old one on the shelf.

Does a Different Color Still Count as the Same Item?

Usually, yes — color alone typically doesn't change the item number, so a color variant is often still the same item for adjustment purposes. Costco frequently sells the same product (a patio set, a jacket, a storage bin) in multiple colors under one shared item number, especially for soft goods and home items.

But this isn't universal. Some products — particularly electronics, appliances, and anything with different components per color (like a laptop with a different finish that also has a different storage configuration) — do get separate item numbers per color. The only way to know for certain is to compare the item number on your receipt to the item number on the current tag or listing.

• Check your receipt for the item number next to the product name.
• Look up that same number on the current price tag, warehouse display, or Costco.com listing.
• If the numbers match, color differences generally don't block the adjustment.
• If the numbers don't match, treat it as a different item, even if the only visible change is color.

Does a Smaller or Larger Size Still Qualify for a Price Adjustment?

No — different sizes are different items, even within the same product line. A 2-pack and a 3-pack of the same paper towels, a king mattress and a queen version of the same model, or a 24-ounce jar versus a 32-ounce jar of the same sauce all carry distinct item numbers. A price drop on one size tells you nothing about eligibility on the size you actually bought.

This trips people up most often with:

This is also where Costco tires price adjustments get confusing — tire pricing is tied tightly to the exact size and specification on your install invoice, not just the tire brand and model name. If you bought a specific tire size and a different size of the "same" tire drops in price later, that's not a match.

Is a Different Model Number Ever Close Enough?

No — a different model number means a different item, even when the branding and features look nearly identical. This comes up constantly with electronics and appliances, where manufacturers release near-identical models each year with a new suffix (think a TV model ending in "U" versus one ending in "U1").

Retailers, including Costco, often use these model refreshes to justify different pricing, and the item number on Costco's system follows the manufacturer's model number, not the general product family. So if you bought model XYZ100 and the shelf now shows XYZ100A at a lower price, that's not eligible — it's a different, newer model.

This is especially relevant for big-ticket purchases:

• Electronics: TVs, laptops, and soundbars get frequent model refreshes. If you're weighing a laptop purchase, it's worth knowing Costco's laptop return policy and price adjustment rules are both tied to the exact model number on your invoice.
• Appliances: Washers, dryers, and refrigerators often have near-identical models sold at different price tiers.
• Starlink kits: Costco has sold Starlink hardware bundles periodically; if the kit configuration or model changes, treat it as a new item for adjustment purposes.

Don't skip this: Always compare the full item number, not just the product name or brand — a one-character difference in a model number or item code can be the difference between an approved adjustment and a declined one.

What About Bundles, Sale Tags, and Online Listings?

Bundles get extra scrutiny because the "same item" test gets harder when the contents of a bundle change. If Costco bundled a printer with ink last month and now sells just the printer at a similar price, that's not the same item — the bundle and the standalone product typically carry separate item numbers. We go deeper on this in Costco Bundle Price Adjustment: What Refund You Can Get.

Sale tags and temporary markdowns are a different matter — they usually don't change the item number at all, since they're a price event layered on the same product. For a full breakdown of how adjustment rules interact with sale pricing specifically, see Costco Price Adjustment on Sale Items: Does It Apply?.

Online listings add one more wrinkle. Costco.com and in-warehouse item numbers aren't always the same for a given product, so an online price drop doesn't automatically confirm eligibility for an in-warehouse purchase, or vice versa. We've laid out how that online-to-warehouse comparison actually works in Costco Online Price Adjustment: How It Works.

Does This Work the Same Way in Costco Canada?

The item-matching logic is the same in both countries, but the comparison can be trickier in Canada because of currency and regional stock differences. Costco Canada uses its own item numbers, separate from Costco US, so you can never compare a US price to a Canadian receipt, or the reverse — only compare prices within the same country's system.

• United States: Compare your receipt's item number against the current US price (warehouse tag or Costco.com) only.
• Canada: Compare your receipt's item number against the current Canadian price (in Canadian dollars) only.
• Cross-border: A lower US price is never grounds for a Costco Canada price adjustment, and Costco has not published any policy allowing cross-border price comparisons.

Beyond the currency separation, Canadian warehouses sometimes carry different size or pack configurations than US warehouses for what's marketed as the same product line, which makes the item number check even more important north of the border.

Why Tracking This by Hand Falls Apart Fast

Matching item numbers manually works fine for one purchase. It breaks down once you're holding ten receipts from three trips, trying to remember which item number went with which product, while also tracking a 30-day countdown for each one separately.

This is the exact gap CostRefund's receipt scanning closes. Upload your Costco receipt, and the app reads the item numbers and watches each eligible purchase for the rest of its adjustment window — then alerts you the moment a matching item number drops in price, so you're not relying on memory or a spreadsheet. CostRefund flags the potential adjustment; Costco still makes the final call on eligibility and approval.

Ready to stop manually cross-checking item numbers? Create a free CostRefund account and let it track the matches for you.

Checklist: Confirming an Item Matches for a Price Adjustment

• Find the item number on your original receipt.
• Compare it to the item number on the current shelf tag or Costco.com listing.
• Confirm the size, capacity, or pack count is identical, not just similar.
• Check the full model number character-by-character for electronics and appliances.
• Verify you're comparing US-to-US or Canada-to-Canada pricing, never across borders.
• Note your purchase date and track the 30-day adjustment window from that date.
• Save your receipt and the current price (screenshot or printout) before requesting the adjustment.
• Upload the receipt to CostRefund so the item number and window get tracked automatically.

Related articles

• Costco Price Adjustment: A Guide to Seasonal Item Refunds
• Costco Bundle Price Adjustment: What Refund You Can Get
• Costco Online Price Adjustment: How It Works