$Tim Duncan [Chrome Refractor Blue] #21 (Basketball Cards 2008 Bowman Chrome) — is it worth grading?$

Is Tim Duncan [Chrome Refractor Blue] #21 worth grading?

Basketball · Basketball Cards 2008 Bowman Chrome · full price guide →

Worth grading — even a PSA 9 beats raw

A PSA 10 Tim Duncan [Chrome Refractor Blue] #21 sells for $276 against $24.56 raw: a $251 spread, 11× the ungraded price. Even a PSA 9 ($61.94) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.

Raw (NM): $24.56
PSA 10: $276
PSA 9: $61.94
Gem premium: 11×
As of: Sep 4, 2026

Break-even by outcome and fee

Tim Duncan [Chrome Refractor Blue] #21: net result of grading versus selling raw, by outcome and fee tier
If it comes back…	Sells for	Economy / bulk (~$25.00)	Standard (~$50.00)	Express (~$150)
Gem — PSA 10	$276	+$226	+$201	+$101
PSA 9	$61.94	+$12.38	−$12.62	−$113
PSA 8	$61.52	+$11.96	−$13.04	−$113

Net = sale price − $24.56 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?

Tim Duncan [Chrome Refractor Blue] #21: expected value of submitting by gem probability
Chance it gems	Expected sale	Expected net (standard fee)
25%	$115	+$40.89
50%	$169	+$94.41
75%	$222	+$148

Break-even gem rate at the standard fee: about 6%. 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 →

Tim Duncan [Chrome Refractor Blue] #21: top-grade value by grading company with centering tolerance
Grader	10 sells for	vs best	Front centering for a 10	Back
BGS 10	$359	best	55/45	70/30
PSA 10	$276	−$83.00	55/45	75/25
CGC 10	$166	−$193	55/45	75/25
SGC 10	$166	−$193	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 →

Tim Duncan [Chrome Refractor Blue] #21 graded prices by company and grade
Grade	PSA	CGC	BGS	SGC	Graded
10	$276	$166	$359	$166	—
9.5	—	—	—	—	$68.00
9	—	—	—	—	$61.94
8	—	—	—	—	$61.52

Swipe the table for the other grading companies →

Run your own numbers

Should I pay this?

Asking priceGrading fee

Enter the seller’s asking price to see your net outcome per grade.

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Grading Tim Duncan [Chrome Refractor Blue] #21 — FAQ

Is Tim Duncan [Chrome Refractor Blue] #21 worth grading?

How much is a PSA 10 Tim Duncan [Chrome Refractor Blue] #21 worth compared with raw?

A PSA 10 Tim Duncan [Chrome Refractor Blue] #21 (Basketball Cards 2008 Bowman Chrome) sells for about $276 versus $24.56 for a raw near-mint copy — a 11× premium as of Sep 4, 2026.

Which grading company is best for Tim Duncan [Chrome Refractor Blue] #21?

By resale value, BGS 10 leads at $359, ahead of PSA 10 at $276. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Tim Duncan [Chrome Refractor Blue] #21 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 Tim Duncan [Chrome Refractor Blue] #21 break even?

At a standard ~$50 fee, submitting Tim Duncan [Chrome Refractor Blue] #21 breaks even when it gems about 6% of the time (a miss assumed to sell at the PSA 9 price of $61.94).

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