St. Marcus Mars [Alternate Art] OP13-091

One Piece Japanese Carrying on His Will · #091 · Aug 2025

Buy Raw on eBayPSA 10 Sold on eBay

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Maybe — Proceed with Caution

Should You Grade?

Raw Price

$10.22

Expected Value

$-2.84

Net Profit

$4.78

Gem Rate

61.0%

ROI

+19%

Sales / Yr

Negative expected value ($-2.84) — while a PSA 10 would be profitable, the probability-weighted outcome across all grades means you lose money on average at this grading tier. Only 92 sales per year — it may take time to find a buyer at full price. PSA 10 profit of $4.78 is thin — grading fees and selling costs eat most of the margin.

Best Tier for Flipping

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Factors in grading cost, turnaround time, and compounding — how fast you can reinvest profits into the next flip.

Profitability by Grading Company

Company	Best Tier	Gem Rate	Pop	10s	Cost	EV	Net Profit	ROI
PSA	PSA Standard	52.3%	8,420	1,250	$20.00	$85.40	$32.50	127%
BGS	BGS Standard	52.3%	8,420	1,250	$20.00	$85.40	$32.50	127%
CGC	CGC Standard	52.3%	8,420	1,250	$20.00	$85.40	$32.50	127%
SGC	SGC Standard	52.3%	8,420	1,250	$20.00	$85.40	$32.50	127%
TAG	TAG Standard	52.3%	8,420	1,250	$20.00	$85.40	$32.50	127%

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Shows the best-value tier from each grading company based on EV, cost, and turnaround. Pop = total graded population; 10s = grade 10 count.

Price by Grade

Raw

$10.22

BGS 10

$294.97

PSA 10

$50.75

CGC 10

$30.00

SGC 10

$30.00

$16.50

View Sold PSA 10 Prices on PriceCharting →View Grading Data on GemRate →

61.0%Gem Rate (PSA 10)

+41 graded in 30 days

+88 in 90 days

Grade Distribution (187 total graded)

187Total

PSA 1011461.0%

PSA 96836.4%

PSA 831.6%

Below 721.1%