Expedition Base Set/#20/165Gembook Value·PSA 9
Mewtwo
$1,466
Details
Price confidence
SetExpedition Base Set
Number20 / 165
Released2002
PSA population158
Fair range$915–$1,275
Last sale$1,275 · Aug 15, 2026
Live listings0 · checked daily
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How we price this
Gembook Value is the weighted median of 3 verified eBay sales. Shill bids, unpaid items, and outliers are filtered out — the numbers you see actually cleared.