Is Michael Porter Jr. #18-12 worth grading?
Basketball · Basketball Cards 2018 Panini Certified 2018 · full price guide →
Strong grading candidate — 61× premium in PSA 10
A PSA 10 Michael Porter Jr. #18-12 sells for $250 against $4.12 raw: a $246 spread, 61× the ungraded price. A PSA 9 ($9.29) only about breaks even after fees, so the case rests on gemming. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
- Raw (NM)
- $4.12
- PSA 10
- $250
- PSA 9
- $9.29
- Gem premium
- 61×
- As of
- Sep 3, 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 | $250 | +$221 | +$196 | +$95.87 |
| PSA 9 | $9.29 | −$19.83 | −$44.83 | −$145 |
Net = sale price − $4.12 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% | $69.47 | +$15.34 |
| 50% | $130 | +$75.52 |
| 75% | $190 | +$136 |
Break-even gem rate at the standard fee: about 19%. 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 | $325 | best | 55/45 | 70/30 |
| PSA 10 | $250 | −$75.01 | 55/45 | 75/25 |
| CGC 10 | $150 | −$175 | 55/45 | 75/25 |
| SGC 10 | $150 | −$175 | 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 2018 Panini Certified 2018 cards worth checking
Full set checklist →Grading Michael Porter Jr. #18-12 — FAQ
Is Michael Porter Jr. #18-12 worth grading?
A PSA 10 Michael Porter Jr. #18-12 sells for $250 against $4.12 raw: a $246 spread, 61× the ungraded price. A PSA 9 ($9.29) only about breaks even after fees, so the case rests on gemming. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
How much is a PSA 10 Michael Porter Jr. #18-12 worth compared with raw?
A PSA 10 Michael Porter Jr. #18-12 (Basketball Cards 2018 Panini Certified 2018) sells for about $250 versus $4.12 for a raw near-mint copy — a 61× premium as of Sep 3, 2026.
Which grading company is best for Michael Porter Jr. #18-12?
By resale value, BGS 10 leads at $325, ahead of PSA 10 at $250. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Michael Porter Jr. #18-12 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 Michael Porter Jr. #18-12 break even?
At a standard ~$50 fee, submitting Michael Porter Jr. #18-12 breaks even when it gems about 19% of the time (a miss assumed to sell at the PSA 9 price of $9.29).
Best on iPhone & Android
Check your basketball 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.
