Individual Cards · Hidden Arsenal: Chapter 1
Formula Synchron HAC1-EN178 Secret Rare Hidden Arsenal: Chapter 1
Secret RareHolofoil·Released 2022
Formula Synchron is a Secret Rare synchro monster from the Hidden Arsenal: Chapter 1 set. This limited edition card features a foil finish and is highly sought after for its utility in Synchro-based strategies. Ideal for competitive play and collection.✦ AI summary
Formula SynchronHAC1-EN178Secret RareHidden Arsenal Chapter 1Yu-Gi-Oh!
How much is Formula Synchron HAC1-EN178 Secret Rare Hidden Arsenal: Chapter 1 worth?
As of Aug 16, 2026, the market median price of Formula Synchron HAC1-EN178 Secret Rare Hidden Arsenal: Chapter 1 is $3.22 on eBay. Across 10 price snapshots tracked by TCGKami, the average is $3.52, ranging from a low of $3.22 (Aug 16, 2026) to a high of $3.85 (Jun 10, 2026), a -16.2% change over the tracking period.
Market median$3.22
Average (tracked)$3.52
Low$3.22Aug 16, 2026
High$3.85Jun 10, 2026
Trend-16.2%
Snapshots10
Data updated Aug 16, 2026 · source: live eBay listings, aggregated by TCGKami
Live Listings
No listings found.
Book of Moon HAC1-EN024 Hidden Arsenal: Chapter 1 Ultra Rare
Dragunity Guisarme HAC1-EN172 Secret Rare Hidden Arsenal: Chapter 1
Lava Golem (Duel Terminal) HAC1-EN008 Hidden Arsenal: Chapter 1 1st Edition Ultra Rare
Naturia Vein HAC1-EN096 Common 1st Edition Hidden Arsenal: Chapter 1
Power Tool Dragon HAC1-EN177 Hidden Arsenal: Chapter 1 Secret Rare 1st Edition