Thundurus [Master Ball] #33

Pokemon Black Bolt · #033 · Jul 2025

Buy Raw on eBayPSA 10 Sold on eBay

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Maybe — Proceed with Caution

Should You Grade?

Raw Price

$6.67

Expected Value

$-4.24

Net Profit

$14.33

Gem Rate

48.4%

ROI

+66%

Sales / Yr

Negative expected value ($-4.24) — while a PSA 10 would be profitable, the probability-weighted outcome across all grades means you lose money on average at this grading tier. Low grading population — gem rates based on only 31 graded cards may be unreliable, and the market for this card in graded form may be illiquid. Only 19 sales per year — it may take time to find a buyer at full price. PSA 10 profit of $14.33 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%

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

$6.67

BGS 10

$58.00

PSA 10

$44.56

CGC 10

$36.00

SGC 10

$27.00

BGS 9.5

$5.00

$4.25

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

48.4%Gem Rate (PSA 10)

⚠ Small sample size — gem rates based on only 31 graded cards may be unreliable.

Grade Distribution (31 total graded)

31Total

PSA 101548.4%

PSA 91445.2%

PSA 813.2%

PSA 713.2%