Most valuable cards in Structure Deck: Machine Reactor: Ancient Gear Fortress #SR03-EN022 ($9.95), Maxx "C" #SR03-EN020 ($9.12), Ancient Gear Wyvern #SR03-EN003 ($6.23).
As of 2026-09-18, the most valuable Yu-Gi-Oh! cards in Structure Deck: Machine Reactor by TCGplayer market price are 1. Ancient Gear Fortress #SR03-EN022 at $10, 2. Maxx "C" #SR03-EN020 at $9, 3. Ancient Gear Wyvern #SR03-EN003 at $6, 4. Galaxy Cyclone #SR03-EN031 at $4, 5. Ancient Gear Catapult #SR03-EN021 at $3. Prices are daily TCGplayer market figures per printing; the ranked list on this page updates every day.
Structure Deck: Machine Reactor has 40 single cards in TickerMint's catalog plus 3 sealed and other products. The full card list below runs in collector-number order with today's market price on every card.
Adding the current market price of every product in Structure Deck: Machine Reactor gives a set market value of $57 across 43 products, of which 40 are single cards. This is the sum of market prices, not the price of a sealed set or a graded collection.
Structure Deck: Machine Reactor was released on 2017-04-14 (set code SR03). TickerMint has tracked its prices daily since September 2026 or since release, whichever is later.