Expedition Base Set/#20/165Gembook Valuei·PSA 9As of Jun 14, 2026 · updated daily at 6:00 AM PT
Confidence Limited · weighted median of 8 verified sales
Fair range $401 – $500
Confidence Limited · weighted median of 8 verified sales
Fair range $401 – $500
Mewtwo
$512#1903 Overall#157 in Expedition Base Set▲ 20.1%SET · 30D
REVERSE-HOLO · PSA 9G
Price History▲ 251.8%
Details
SetExpedition Base Set
Number20 / 165
Released2002
PSA population156
Price confidenceLimited
Fair range$401 – $500
Last sale$700 · Apr 3, 2026
Live listings0 · checked daily
Recent sales
8 verified · 10 shownApr 3, 2026eBay$700+$188
Mar 14, 2026eBay$445−$67
Mar 11, 2026eBay$500−$12
Jan 22, 2026eBay$401−$110
Dec 28, 2025eBay$350−$162
Live listings
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How we price this
Gembook Value is the weighted median of 8 verified eBay sales. Shill bids, unpaid items, and outliers are filtered out — the numbers you see actually cleared.