The Mountain Cave #21137 — Loose vs Complete (CIB) vs Sealed (new): which is worth more?
The Mountain Cave #21137 value — Loose $165 vs Complete (CIB) $881. Complete (CIB) sells for 5.34× Loose (+434%). Prices updated August 2026.
→ Steady
ConditionSold medianvs Loose
Medians of real sold listings per condition, updated August 2026 — how we compute values.
Loose vs Complete (CIB)
$165→$881
Complete (CIB) sells for 5.34× (+434%) the Loose price — a $716 difference per set.
Complete (CIB) vs Sealed (new)
$881→$1680
Sealed (new) sells for 1.91× (+91%) the Complete (CIB) price — a $799 difference per set.
Is complete worth it?
Complete (CIB) $881 vs Loose $165 — a $716 premium (+434%). 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).