Four Knocks (Doctor Who) — Market vs Foil: which is worth more?
Four Knocks (Doctor Who) value — Market $1.29 vs Foil $2.29. Foil sells for 1.78× Market (+78%). Prices updated August 2026.
Medians of real sold listings per condition, updated August 2026 — how we compute values.
Market vs Foil
$1.29→$2.29
Foil sells for 1.78× (+78%) the Market price — a $1 difference per card.
Is complete worth it?
Foil $2.29 vs Market $1.29 — a $1 premium (+78%). 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).