Formula Synchron

Hidden Arsenal: Chapter 1 (2022), Yu-Gi-Oh!, HAC1-EN178, Secret Rare

Printing: Limited, Near Mint

$0.54

TCGplayer market price (an average of recent sales)

As of Oct 26 (2 days ago). Unchanged since Oct 25.

Buy on TCGplayer Search on eBay

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Price trend

Oct 19 $0.55 → Oct 26, 2026 $0.54 −1.8%

$0.55$0.53$0.54

Oct 19, 2026Oct 21, 2026Oct 22, 2026Oct 23, 2026Oct 26, 2026

Sep 26 $0.60 → Oct 26, 2026 $0.54 −10.0%

$0.62$0.53low$0.56$0.58$0.60$0.54

Sep 26, 2026Oct 6, 2026Oct 11, 2026Oct 16, 2026Oct 26, 2026

Jul 28 $0.56 → Oct 26, 2026 $0.54 −3.6%

$0.62$0.48$0.50$0.55$0.60$0.54

Jul 28, 2026Aug 27, 2026Sep 11, 2026Sep 26, 2026Oct 26, 2026

Oct 26, 2025 $0.58 → Oct 26, 2026 $0.54 −6.9%

$1.13$0.49low$0.80$1.00$0.54

Oct 26, 2025Feb 24, 2026Apr 26, 2026Jun 26, 2026Oct 26, 2026

Feb 8, 2024 $4.49 → Oct 26, 2026 $0.54 −88.0%

$5.19$0.47low$2.00$4.00$0.54

Feb 8, 2024Jan 3, 2025Jun 17, 2025Nov 29, 2025Oct 26, 2026

Vs its set

Over the 90 days to Oct 26, 2026: this card −3.6%; the median other printing in Hidden Arsenal: Chapter 1 0.0% (307 other printings). 278 of those 307 changed price, but no more than half rose and no more than half fell, so the middle change is 0%.

Market details

Sold vs asking

Recent sales (TCGplayer market price)$0.54

Sellers asking (median listing)$0.97

0$0.97

Sellers ask 1.8× the recent sale price.

Asking figure from TCGplayer listings, as of Oct 26.

Record

Price history Feb 8, 2024 to Oct 26, 2026

Highest$5.19Feb 17, 2024 only

Lowest$0.47Oct 9, 2025 to Oct 11, 2025

Vs highest90% below $5.19

Price changes, last 30 days

Date	Price	Change
Oct 11	$0.61 → $0.53	−13.1%	Show on chart
Oct 12	$0.53 → $0.54	+1.9%	Show on chart
Oct 16	$0.54 → $0.55	+1.9%	Show on chart
Oct 20	$0.55 → $0.54	−1.8%	Show on chart
Oct 22	$0.54 → $0.53	−1.9%	Show on chart
Oct 25	$0.53 → $0.54	+1.9%	Show on chart