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Home/Gym Challenge/Master Ball · PSA 8
Master Ball Gym Challenge

Master Ball

Gym Challenge · #116/132 · PSA 81st Edition

Raw$5.69

Fair Value

$38.50

Based on 4 verified eBay sales over 65 days·LIMITED·Very Low Liquidity

Range

$26.99–$50.00

60% spread

Last Sold

$40.00

May 29

PSA Population

47

30d Volume

1(-100% vs prior)

eBay PSA 8 — $40.00 on May 29, 2026eBay PSA 8 — $26.99 on Apr 27, 2026eBay PSA 8 — $24.99 on Mar 30, 2026eBay PSA 8 — $50.00 on Mar 25, 2026$25$37$50Mar 25Apr 13May 3May 23Jun 11

Why this verdict

Methodology →
  • Fair value$38.50Weighted median of 4 verified sales
  • Range$26.99 – $50.0060% spread between bottom and top
  • ConfidenceLIMITEDBased on 4 sales — will sharpen with more data

Live Listings

Very Low Liquidity
0 active

No active eBay listings for PSA 8 1st Edition. We check daily — check back soon.

Recent Sales

4 comps
eBayMay 29, 2026

$40.00

$2 over fair

eBayApr 27, 2026

$26.99

$12 under fair

eBayMar 30, 2026

$24.99

$14 under fair

eBayMar 25, 2026

$50.00

$12 over fair

Why this verdict — 90-day methodology

Fair value is computed from 4 PSA-graded comps over the last 90 days. Confidence: WEAK (<4 comps OR spread exceeds tier limits).

Sources

  • eBay4 (100.0%)

Sub-signals

  • Fair range: $27–$50
  • Price dispersion: 28.6%
  • Raw (NM) index: $6
  • Newest comp: 13d ago
  • Cert-verified: 0.0%
Full methodology →