Is Coby Mayo #CPA-CMA worth grading?
Baseball · Baseball Cards 2021 Bowman Chrome Prospect Autographs · full price guide →
Worth grading only if it gems
A PSA 10 Coby Mayo #CPA-CMA brings $123 versus $42.82 raw — a $79.68 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($52.28) only about breaks even after fees, so the case rests on gemming.
- Raw (NM)
- $42.82
- PSA 10
- $123
- PSA 9
- $52.28
- Gem premium
- 2.9×
- As of
- Sep 4, 2026
Break-even by outcome and fee
| If it comes back… | Sells for | Economy / bulk (~$25.00) | Standard (~$50.00) | Express (~$150) |
|---|---|---|---|---|
| Gem — PSA 10 | $123 | +$54.68 | +$29.68 | −$70.32 |
| PSA 9 | $52.28 | −$15.54 | −$40.54 | −$141 |
| PSA 8 | $34.83 | −$32.99 | −$57.99 | −$158 |
Net = sale price − $42.82 raw value − fee. Fee tiers are illustrative; plug your grader's current price into the calculator below.
Expected value — how often does it need to gem?
| Chance it gems | Expected sale | Expected net (standard fee) |
|---|---|---|
| 25% | $69.84 | −$22.98 |
| 50% | $87.39 | −$5.43 |
| 75% | $105 | +$12.12 |
Break-even gem rate at the standard fee: about 58%. Centering is the usual reason a clean copy misses — measure it before you decide.
Which grader pays the most — and what a 10 takes
All centering standards →| Grader | 10 sells for | vs best | Front centering for a 10 | Back |
|---|---|---|---|---|
| BGS 10 | $159 | best | 55/45 | 70/30 |
| PSA 10 | $123 | −$36.50 | 55/45 | 75/25 |
| CGC 10 | $74.00 | −$85.00 | 55/45 | 75/25 |
| SGC 10 | $70.00 | −$89.00 | 55/45 | 75/25 |
Tolerances are each company's published centering standard for its top grade; surface, corners and edges must also be clean. Centering is the one you can measure yourself before you pay.
Full grade ladder
Raw conditions & history →Swipe the table for the other grading companies →
Run your own numbers
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
Other 2021 Bowman Chrome Prospect Autographs cards worth checking
Full set checklist →![Emmanuel Rodriguez [Refractor] #CPA-ERO 2021 Bowman Chrome Prospect Autographs card](https://i.ebayimg.com/images/g/DsQAAeSwFcFqN3Te/s-l500.jpg)
Grading Coby Mayo #CPA-CMA — FAQ
Is Coby Mayo #CPA-CMA worth grading?
A PSA 10 Coby Mayo #CPA-CMA brings $123 versus $42.82 raw — a $79.68 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($52.28) only about breaks even after fees, so the case rests on gemming.
How much is a PSA 10 Coby Mayo #CPA-CMA worth compared with raw?
A PSA 10 Coby Mayo #CPA-CMA (Baseball Cards 2021 Bowman Chrome Prospect Autographs) sells for about $123 versus $42.82 for a raw near-mint copy — a 2.9× premium as of Sep 4, 2026.
Which grading company is best for Coby Mayo #CPA-CMA?
By resale value, BGS 10 leads at $159, ahead of PSA 10 at $123. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Coby Mayo #CPA-CMA need for a BGS 10?
BGS publishes 55/45 front and 70/30 back centering as the tolerance for a 10 (Gem Mint). Off-center copies are capped below the top grade regardless of surface — measure yours before paying the fee.
What gem rate makes grading Coby Mayo #CPA-CMA break even?
At a standard ~$50 fee, submitting Coby Mayo #CPA-CMA breaks even when it gems about 58% of the time (a miss assumed to sell at the PSA 9 price of $52.28).
Best on iPhone & Android
Check your baseball card in the Midpoint app
Scan with your camera to measure centering to the millimeter, get an AI grade with corner and edge close-ups, see what your copy is worth, and track it in your portfolio. Free to start.
