Expedition Base Set/#4/165Gembook Valuei·PSA 9As of Jun 18, 2026 · updated daily at 6:00 AM PT
Confidence Moderate · weighted median of 6 verified sales
Fair range $650–$790
Confidence Moderate · weighted median of 6 verified sales
Fair range $650–$790
Blastoise
$775#1589Overall#137in Expedition Base Set10.8%SET · 30D
REVERSE-HOLO · PSA 9
Price History163.3%
Details
SetExpedition Base Set
Number4 / 165
Released2002
PSA population130
Price confidenceModerate
Fair range$650–$790
Last sale$790 · Jun 2, 2026
Live listings0 · checked daily
Recent sales
6 verified · 5 shownJun 2, 2026eBay$790+$14
May 22, 2026eBay$700−$75
May 18, 2026eBay$650−$125
May 12, 2026eBay$489−$287
Apr 12, 2026eBay$710−$65
Live listings
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How we price this
Gembook Value is the weighted median of 6 verified eBay sales. Shill bids, unpaid items, and outliers are filtered out — the numbers you see actually cleared.