Mayhem Devil (Secret Lair Promo) — Market vs Foil: which is worth more?
Mayhem Devil (Secret Lair Promo) value — Market $1.10 vs Foil $9.49. Foil sells for 8.63× Market (+763%). Prices updated August 2026.
Medians of real sold listings per condition, updated August 2026 — how we compute values.
Market vs Foil
$1.10→$9.49
Foil sells for 8.63× (+763%) the Market price — a $8.39 difference per card.
Is complete worth it?
Foil $9.49 vs Market $1.10 — a $8.39 premium (+763%). If you're holding the box and manual, completing a loose copy pays when that premium beats what the missing pieces cost you.
Values are estimates from real sales data — not appraisals or offers. Some links earn JunkPal a commission at no cost to you (disclosure).