Midpoint - Card Centering Tool

Is Round ROBYNS #513b worth grading?

Garbage Pail Kids · 1988 Garbage Pail Kids · full price guide →

Worth grading only if it gems

A PSA 10 Round ROBYNS #513b brings $33.50 versus $2.10 raw — a $31.40 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($14.99) only about breaks even after fees, so the case rests on gemming.

Raw (NM)
$2.10
PSA 10
$33.50
PSA 9
$14.99
Gem premium
16×
As of
Aug 16, 2026

Break-even by outcome and fee

Round ROBYNS #513b: net result of grading versus selling raw, by outcome and fee tier
If it comes back…Sells forEconomy / bulk (~$25.00)Standard (~$50.00)Express (~$150)
Gem — PSA 10$33.50+$6.40−$18.60−$119
PSA 9$14.99−$12.11−$37.11−$137
PSA 8$14.00−$13.10−$38.10−$138

Net = sale price − $2.10 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?

Round ROBYNS #513b: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$19.62−$32.48
50%$24.25−$27.86
75%$28.87−$23.23

At the standard fee this submission does not break even at any realistic gem rate unless the miss lands above the 9 price.

Which grader pays the most — and what a 10 takes

All centering standards
Round ROBYNS #513b: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$44.00best55/4570/30
PSA 10$33.50−$10.5055/4575/25
CGC 10$20.00−$24.0055/4575/25
SGC 10$13.99−$30.0155/4575/25

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.

Round ROBYNS #513b graded prices by company and grade
GradePSACGCBGSSGCGraded
10$33.50$20.00$44.00$13.99
9.5$16.00
9$14.99
8$14.00

Run your own numbers

Should I pay this?

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

Other 1988 Garbage Pail Kids cards worth checking

Full set checklist

Grading Round ROBYNS #513b — FAQ

Is Round ROBYNS #513b worth grading?

A PSA 10 Round ROBYNS #513b brings $33.50 versus $2.10 raw — a $31.40 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($14.99) only about breaks even after fees, so the case rests on gemming.

How much is a PSA 10 Round ROBYNS #513b worth compared with raw?

A PSA 10 Round ROBYNS #513b (1988 Garbage Pail Kids) sells for about $33.50 versus $2.10 for a raw near-mint copy — a 16× premium as of Aug 16, 2026.

Which grading company is best for Round ROBYNS #513b?

By resale value, BGS 10 leads at $44.00, ahead of PSA 10 at $33.50. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Round ROBYNS #513b 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.

Is your Garbage Pail Kids card centered well enough to grade?

Centering makes or breaks a PSA 10. Scan any card with Midpoint to measure its exact centering, get a grade estimate, and see what your copy is actually worth.

Check my card free