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  5. Structure Deck: Machine Reactor
  6. Ancient Gear Castle

Yu-Gi-Oh! · Structure Deck: Machine Reactor · #SR03-EN023 · Common

Ancient Gear Castle

Yu-Gi-Oh! card price for Ancient Gear Castle: $0.70 market, from $0.10 at the cheapest listing, 1st Edition printing, updated Oct 18, 2026. Full price history since Feb 8, 2024 below.

Market price · 1st Edition · Oct 18, 2026
$0.70
0.0% this week · +4.5% in 30 days
Buy on eBay →
1 day0.0%
7 days0.0%
30 days+4.5%
90 days−11.4%
1 year−10.3%
All time−36.4%

Sellers right now

$0.10lowest listing$19.91highest
Market price$0.70
Mid listing$0.67
30-day avg$0.69

Market price is what a near-mint copy actually sold for. The cheapest listing is what a seller asks today — on thin markets the two differ a lot.

Where to buy

TCGplayer$0.70

One year

$0.4452-week low$0.7952-week high
In the range74%
All-time low$0.44
All-time high$1.87
First priceFeb 8, 2024
1st Edition · market price
$0.43$0.95$1.48$2.01
$0.70
Feb 2024Dec 2024Nov 2025Oct 2026
TCGplayer market price · via tcgcsvtcgrate.com

Price story

Ancient Gear Castle (1st Edition) entered our records in February 2024 at $1.10 and stands at $0.70 today, down 36.4% over that time. Over the past twelve months it moved −10.3%, trading between $0.44 and $0.79. The current price is in the middle of that range. Its all-time high in our data is $1.87, still 167% above the current price. The cheapest listing right now is $0.10, and the 30-day average market price is $0.69.

Printings

PrintingMarketLowHigh7d
1st Edition$0.70$0.10$19.910.0%
Unlimited$0.38$0.23$19.91+8.6%

The card in play

Card type
Continuous Spell
Attribute
SPELL
Card text

All "Ancient Gear" monsters gain 300 ATK. Each time a monster is Normal Summoned/Set, place 1 counter on this card. If you Tribute Summon an "Ancient Gear" monster face-up, you can Tribute this card instead, if the number of its counters is equal to or greater than the number of required Tribute(s).

Other printings of Ancient Gear Castle

5 more · $0.21 – $29.94
All printings
Ancient Gear Castle (UTR) (SOI-EN047), Shadow of Infinity — Yu-Gi-Oh! card price +59.1% 7d Ancient Gear Castle (UTR) Shadow of Infinity · #SOI-EN047 $29.94 Ancient Gear Castle (SOI-EN047), Shadow of Infinity — Yu-Gi-Oh! card price 0.0% 7d Ancient Gear Castle Shadow of Infinity · #SOI-EN047 $0.58 Ancient Gear Castle (SD10-EN023), Structure Deck: Machine Re-Volt — Yu-Gi-Oh! card price +8.8% 7d Ancient Gear Castle Structure Deck: Machine Re-Volt · #SD10-EN023 $0.37 Ancient Gear Castle (SGX1-END13), Speed Duel GX: Duel Academy Box — Yu-Gi-Oh! card price 0.0% 7d Ancient Gear Castle Speed Duel GX: Duel Academy Box · #SGX1-END13 $0.21 Ancient Gear Castle (DR04-EN167), Dark Revelation Volume 4 — Yu-Gi-Oh! card price — 7d Ancient Gear Castle Dark Revelation Volume 4 · #DR04-EN167 —

Also in Structure Deck: Machine Reactor

most valuable
Full set
Ancient Gear Fortress (SR03-EN022), Structure Deck: Machine Reactor — Yu-Gi-Oh! card price 0.0% 7d Ancient Gear Fortress Structure Deck: Machine Reactor · #SR03-EN022 $9.95 Maxx "C" (SR03-EN020), Structure Deck: Machine Reactor — Yu-Gi-Oh! card price −15.4% 7d Maxx "C" Structure Deck: Machine Reactor · #SR03-EN020 $7.10 Ancient Gear Wyvern (SR03-EN003), Structure Deck: Machine Reactor — Yu-Gi-Oh! card price +1.5% 7d Ancient Gear Wyvern Structure Deck: Machine Reactor · #SR03-EN003 $6.27 Galaxy Cyclone (SR03-EN031), Structure Deck: Machine Reactor — Yu-Gi-Oh! card price 0.0% 7d Galaxy Cyclone Structure Deck: Machine Reactor · #SR03-EN031 $3.94 Ancient Gear Catapult (SR03-EN021), Structure Deck: Machine Reactor — Yu-Gi-Oh! card price +1.8% 7d Ancient Gear Catapult Structure Deck: Machine Reactor · #SR03-EN021 $3.43