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Thestalos the Mega Monarch card prices and values
There are 5 Thestalos the Mega Monarch cards and versions in our Yu-Gi-Oh price list. The most valuable is Thestalos the Mega Monarch PRIO-EN035 from Primal Origin at about $6.63 ungraded, and the highest PSA 10 value is Thestalos the Mega Monarch from Primal Origin at about $113. Prices updated September 24, 2026.
| Card | Raw | PSA 9 | PSA 10 |
|---|---|---|---|
 Thestalos the Mega Monarch PRIO-EN035Primal Origin · 1st Edition | $6.63 | $31.56 | $113 |
| Thestalos the Mega Monarch PRIO-EN035Primal Origin · Unlimited | $3.93 | $23.11 | $90.50 |
 Thestalos the Mega Monarch MP15-EN0212015 Mega-Tins Mega Pack · 1st Edition | $2.29 | $18.84 | $23.00 |
 Thestalos the Mega Monarch GFTP-EN082Ghosts From the Past · 1st Edition | $0.40 | $6.00 | $32.17 |
 Thestalos the Mega Monarch OP28-EN015OTS Tournament Pack 28 · Unlimited | $0.14 | — | — |
Sorted by ungraded price. Raw prices: TCGplayer market price. Graded values: PriceCharting. A dash means we do not show a graded value for that card. This is a guide, not financial advice.
Questions
Thestalos the Mega Monarch card questions
What is the most valuable Thestalos the Mega Monarch card?
Thestalos the Mega Monarch PRIO-EN035 from Primal Origin (1st Edition) at about $6.63 ungraded. The highest graded value is Thestalos the Mega Monarch from Primal Origin at about $113 as a PSA 10.
How much is a Thestalos the Mega Monarch card worth?
It depends on the exact card and version. Thestalos the Mega Monarch cards in our list run from $0.14 to $6.63 ungraded. Find your card by its number in the table, then open it for the full prices.