The Stone Brain (The Brothers' War Promos) — Market vs Foil: which is worth more?
The Stone Brain (The Brothers' War Promos) value — Market $0.76 vs Foil $0.48. Market sells for 1.58× Foil (+58%). Prices updated September 2026.
Medians of real sold listings per condition, updated September 2026 — how we compute values.
Market vs Foil
$0.48→$0.76
Market sells for 1.58× (+58%) the Foil price — a $0.28 difference per card.
Is complete worth it?
Market $0.76 vs Foil $0.48 — a $0.28 premium (+58%). 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).