Steam SiegeSTS
Pokémon TCG · 262 cards in our catalog with live market prices · 177 copies AI-graded on TCGrader averaging 8.7, with 19% reaching gem mint (9.5+).
262
cards in set
177
AI grades on TCGrader
8.7
average grade
19%
hit gem mint (9.5+)
Most valuable Steam Siege cards

Gardevoir-EX
#116 · $80.35

Gardevoir-EX · Holo
#116 · $80.35

M Gardevoir-EX
#112 · $48.00

M Gardevoir-EX · Holo
#112 · $48.00

M Steelix-EX
#109 · $24.40

M Steelix-EX · Holo
#109 · $22.48

Volcanion-EX
#115 · $20.00

Volcanion-EX · Holo
#115 · $20.00

M Gardevoir-EX · Holo
#79 · $18.22

Gardevoir-EX
#111 · $17.00

Gardevoir-EX · Holo
#111 · $17.00

Steelix-EX · Holo
#108 · $16.99
Steam Siege card list & prices
Showing 150 of 262 cards, highest value first. Browse the full set in the catalog →
Got Steam Siege cards? Find out what they'd grade.
Across 177 Steam Siege cards graded on TCGrader, the average grade is 8.7 and only 19% reach gem mint — check yours before paying for professional grading.
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