Koffing #51

Pokemon Base Set · #51 · Base · Jun 1995

Buy Raw on eBayPSA 10 Sold on eBay

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Maybe — Proceed with Caution

Should You Grade?

Raw Price

$1.32

Expected Value

$11.05

Net Profit

$16.68

Gem Rate

28.5%

ROI

+102%

Sales / Yr

260

The gem rate is only 29% — you'll need a very clean copy to hit PSA 10. PSA 10 profit of $16.68 is thin — grading fees and selling costs eat most of the margin.

Best Tier for Flipping

Unlock with Pro →

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%

Compare All Companies with Pro →

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

$1.32

BGS 10

$151.00

PSA 10

$115.94

SGC 10

$70.00

BGS 9.5

$39.00

CGC 10

$33.00

$32.00

$19.13

$18.81

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

28.5%Gem Rate (PSA 10)

+23 graded in 30 days

+52 in 90 days

Grade Distribution (1,375 total graded)

1,375Total

PSA 1039228.5%

PSA 959443.2%

PSA 821715.8%

PSA 7755.5%

Below 7896.5%