Pokémon · XY - Steam Siege (2016)
Updated: October 29, 2026
See eBay listings ›Got Foongus 12/114? Snap a photo and CardFolio's AI estimates the PSA grade yours would get and what it's worth in its real condition. Your first analysis is free when you sign up (app in Spanish).
Get a free AI grade Price drop alertFoongus 12/114 from XY - Steam Siege (2016) is worth $0.42 raw (ungraded), based on real sales. A PSA 10 copy sells for $34.70, about 82x more. PSA 9 is around $28.94. Check the version: the Reverse Holo sells for $1.19. It is the #30 most valuable of the 42 XY - Steam Siege cards we track.
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Full card list of Steam Siege › Packs and boxes from this set ›
Gardevoir EX Secret 116/114$109.01PSA 10 $3,156.89
M Gardevoir EX Full Art 112/114$57.09PSA 10 $808.62
Volcanion EX Secret 115/114$35.68PSA 10 $1,445.64
M Steelix EX Full Art 109/114$28.20PSA 10 $669.41
Gardevoir EX Full Art 111/114$27.77PSA 10 $1,854.29
M Gardevoir EX 79/114$22.83PSA 10 $317.63
Steelix EX Full Art 108/114$17.50PSA 10 $1,380.21
Professor Sycamore 114/114$13.00PSA 10 $159.37
Kirlia 53/98Ancient Origins$0.47PSA 10 $40.27
Lairon 79/124Dragons Exalted$0.47PSA 10 $38.61
Lapras 28/122BREAKpoint$0.47PSA 10 $38.70
Lombre 30/135Plasma Storm$0.47PSA 10 $40.64LLudicolo 037/159Journey Together$0.47PSA 10 $35.80
Luminous Energy 191 193Prize Pack Series Cards$0.47
Mareep Pikachu 45 107Battle Academy 2024$0.47
Master Ball 88/107EX Deoxys$0.47PSA 10 $42.14Ranking: most expensive Pokémon cards ›
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