Silver Rises Over 120% YTD 
Costco has sold 1 oz Gold Eagles and Buffalos since at least early 2024, and Gold Maple Leafs since late 2024. Here’s what yours are worth, how coins compare with bars when you sell, and where to sell them, since Costco doesn’t buy them back.
- Each 1 oz coin holds one troy ounce of gold: roughly $4,150 in mid-October 2026.
- Well-known coins usually draw a strong bid when you sell, often a little better than bars.
- Costco won’t buy them back. GoldSilver will: get a free estimate before you ship, or vault them in your name.
Own Costco gold or silver? Start with the hub: what yours is worth, and how to sell it. Costco Gold Hub →
What’s inside each coin
All three hold one troy ounce of gold. The 22-karat Eagle adds silver and copper, so it weighs more and looks warmer. That’s normal, not a fake.
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| Coin | Fineness | Total weight | Diameter |
|---|---|---|---|
| American Gold Eagle | .9167 (22k) | 33.931 g | 32.70 mm |
| American Gold Buffalo | .9999 (24k) | 1.000 troy oz | 32.70 mm |
| Canadian Gold Maple Leaf | .9999 | 31.11 g | 30 mm |
Sources: US Mint spec pages; Royal Canadian Mint.
What is your Costco gold coin worth?
A 1 oz coin’s melt value is one ounce at spot price: about $4,150 in mid-October 2026.
Well-known coins in good condition draw strong bids: one dealer guide puts typical Gold Eagle bids at 96–99% of spot. GoldSilver bids your coins out to competing dealers before you ship, so your free estimate reflects the highest price offered among those dealers.
Sell your coins
Free estimate, competing dealer bids, paid by check or wire. Get an estimate
Not ready? Keep them, fully insured, in a vault
Allocated in your name, 0.06% of total value per month ($4 minimum). Vault storage
Sell your bars too
Own Costco bars as well as coins? One estimate covers both. Costco gold bars: what yours is worth
Coins vs bars: How each sells
At Costco, coins usually cost a little more over spot price: one analysis put the Gold Eagle at about 4–6% and the 1 oz PAMP bar at 3–5%. That extra cost earns some of itself back when you sell.
| Gold coins | 1 oz bars | |
|---|---|---|
| Bid when you sell | Gold Eagles typically 96–99% of spot | Near spot for sealed PAMP and Rand bars |
| Premium when you bought | Usually higher | Usually lower |
| IRA-eligible metal | Gold Eagle named in the tax code; .9999 coins under the bullion rule | Yes, under the bullion rule |
Sources: MintBuilder; 26 U.S.C. §408(m)(3); metalcharts.org dealer premiums (September 26, 2026).
Either way, both sell well. Own coins and bars? GoldSilver gives one estimate for everything.
How to sell Costco gold coins
Costco doesn’t buy gold back. GoldSilver does: we buy Gold Eagles, Buffalos and Maple Leafs, whether you bought them at Costco or anywhere else.
GoldSilver’s simple selling process:
Get a free estimate. Online or at (888) 491-7087; we bid your coins out to competing dealers.
Ship it free. We send a prepaid, fully insured label.
We verify it. Each coin is authenticated on arrival.
Get paid. By check or wire.
Not ready to sell? Mail them to our vault: once they pass testing they’re held in your name, and you can sell 24/7. Either way, before you ship:
Cleaning leaves marks that reduce value.
Original capsules help maximize value.
Selling 25 or more Maple Leafs within 24 hours can trigger a dealer 1099-B; Gold Eagles generally don’t (IRS; Greysheet). You owe tax on any gain either way.
Eagles, Buffalos and Maple Leafs, from Costco or anywhere else.
Get an estimate Or call (888) 491-7087
How to check if a coin is genuine
Costco’s coins come from government mints, so checking matters mainly if a coin has changed hands. Weigh it to 0.01 g and check its diameter against the table. Maple Leafs from 2014 on carry a micro-engraved security mark. You don’t need to verify a coin before selling it to GoldSilver: we authenticate it on arrival.
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People frequently ask
Will Costco buy back my gold coins?
No, but GoldSilver buys Costco gold coins, with a free estimate before you ship.
Is a Gold Eagle real gold if it’s only 22 karats?
Yes. Every 1 oz Gold Eagle contains one full troy ounce of gold; the alloy is extra weight.
Can I put Costco gold coins in an IRA?
Not the coins you already own; IRA contributions must be made in cash. Selling them and contributing the cash is one route. An IRA can buy eligible coins through a custodian.
SOURCES
1. Slickdeals — 2025 1 oz American Buffalo gold coin, $3,449.99 (July 7, 2025)
2. Slickdeals — 2025 1 oz Canada Maple Leaf gold coin, $3,369.99 (June 1, 2025)
3. Slickdeals — 2025 1 oz American Eagle gold coin, $3,359.99 (May 20, 2025)
4. Slickdeals — 2024 1 oz American Eagle gold coin, $2,389.99 (June 4, 2024)
5. Slickdeals — 2024 1 oz American Buffalo gold coin (March 28, 2024)
6. La Opinión — Costco también vende monedas de oro (April 22, 2024)
7. Kitco — Costco sees double-digit growth in gold sales, adds new bullion products (September 30, 2024)
8. Costco.com — 1 oz Gold Bar PAMP Suisse Lady of Justice listing (returns and terms) (checked October 20, 2026)
9. US Mint — American Eagle gold coin specifications
10. US Mint — American Buffalo coins
11. US Mint — 2024 American Buffalo one ounce gold proof coin (specifications)
12. Costco.com — 2026 1 oz American Eagle gold coin (checked October 20, 2026)
13. Costco.com — 2026 1 oz American Buffalo gold coin (checked October 20, 2026)
14. Costco.com — 2025 1 oz Canada Maple Leaf gold coin (checked October 20, 2026)
15. Royal Canadian Mint — 2025 1 oz 99.99% pure Gold Maple Leaf
16. Zawya (Reuters) — Gold rises on softer dollar (October 9, 2026)
17. metalcharts.org — Precious metals all-time highs (October 19, 2026)
18. MintBuilder — Selling American Eagle gold coins (February 21, 2026)
19. FindBullionPrices — Costco adds more coins and bars to its precious metals lineup (accessed October 2026)
20. metalcharts.org — Gold coin premiums (September 26, 2026)
21. GovInfo — 26 U.S.C. §408(m)
22. IRS — Instructions for Form 1099-B
23. Greysheet — When are 1099s required for coin sales? (December 11, 2025)
24. APMEX — Tax information on gold and silver buying
25. Hero Bullion — Costco gold bars guide (August 4, 2026)
GoldSilver is not affiliated with Costco Wholesale. General information, not investment, tax or legal advice. Prices and Costco’s products and terms change; check live prices and the current listing before you buy or sell.
Free estimate before you ship. Eagles, Buffalos and Maple Leafs.
