Cards › 1998 Skybox Thunder Flight School Michael Jordan #9
Is the 1998 Skybox Thunder Flight School Michael Jordan #9 worth grading?
Live market numbers as of 2026-10-22 — raw vs. graded value, PSA 10 gem rate, and the breakeven math.
Raw value
$403.50
PSA 9 value
$1,691.42
PSA 10 value
$9,584.41
PSA 10 gem rate
0%
Based on the numbers below, this card is potentially worth grading — a PSA 10 nets an estimated $7,626, but the 0% gem rate means the 10 is far from guaranteed. Weigh the PSA 9 outcome below.
The breakeven math
| Line item | Amount |
|---|---|
| Raw purchase | $403.50 |
| Sales tax (8%) | $32.28 |
| Grading fee (priority tier) | $80.00 |
| Shipping | $5.00 |
| Total cost basis | $520.78 |
| Net at PSA 10 (85% payout) | +$7,625.97 (+1464%) |
| Net at PSA 9 (the downside case) | +$916.93 |
Assumptions: $80 grading, $5 shipping, 8% tax on the raw purchase, and keeping 85% of the sale after marketplace fees. Your numbers will differ — run them below.
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Start free trialCard pricing data provided by SportsCardsPro, a service of PriceCharting. Gem rates reflect recent PSA population data. Not investment advice — grading outcomes are probabilistic and markets move. © Summit Sports Cards · About · Pricing