Koffing [1st Edition] #51

Pokemon Base Set · #51 · Jun 1995

Buy Raw on eBayPSA 10 Sold on eBay

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Maybe — Proceed with Caution

Should You Grade?

Raw Price

$22.49

Expected Value

$22.03

Net Profit

$42.26

Gem Rate

23.7%

ROI

+113%

Sales / Yr

284

The gem rate is only 24% — you'll need a very clean copy to hit PSA 10.

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

$22.49

BGS 10

$673.00

PSA 10

$517.50

SGC 10

$311.00

CGC 10

$79.75

$68.20

BGS 9.5

$54.99

$40.00

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

23.7%Gem Rate (PSA 10)

Grade Distribution (2,663 total graded)

2,663Total

PSA 1063123.7%

PSA 91,08140.6%

PSA 852119.6%

PSA 72268.5%

Below 71907.1%