Miraidon ex #79 from Obsidian Flames

Should you grade Miraidon ex #79?

Obsidian Flames · grading ROI analysis

Verdict GRADE

Expected value is strongly positive — the gem rate is high enough to justify the PSA fee even accounting for sub-10 outcomes.

Ungraded

$1.32

PSA 10

$33.44

Gem rate

25.7%

PSA pop

276

Estimates from public data, for informational purposes only — not financial or investment advice, and not a guarantee of any grade, price, or outcome. See methodology.

The math

Breakeven sale price (raw price + PSA fee)

$1.32 + $25 = $26.32

You need to sell the slabbed card for at least this much to break even.

Projected PSA 10 uplift

($33.44 − $1.32 − $25) ÷ $1.32 × 100 = +539%

If you grade this card AND it returns PSA 10, this is your gross return on grading.

Expected value (uplift × gem rate)

539% × 25.7% = +138.7%

The real number. Adjusts for the fact that not every submission grades PSA 10.

Net PSA 10 proceeds after marketplace fees

eBay: $21.21 · TCGplayer: $26.71

After 13.25% eBay (or 10.25% TCGplayer) fee + per-order fee + ship. Subtract PSA grading fee ($25) + any PSA shipping for true profit. See methodology.

What this calculator doesn't show

  • Shipping costs. PSA shipping (in + out) typically adds $5–$15 per submission.
  • Selling fees. eBay takes ~13% of gross; TCGplayer ~10%. Subtract from PSA 10 price for net proceeds.
  • Holding cost. 30–60 day PSA turnaround means your capital is tied up.
  • Sub-grade outcomes. A PSA 9 might still beat ungraded price, but a PSA 8 often doesn't. We model only the binary PSA-10-or-bust outcome — be more conservative for borderline cards.
  • Market volatility. PSA 10 prices can swing 20%+ on news cycles. Today's calculated uplift is a snapshot.
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See methodology for how we source data and calculate ROI.