The Mountain Cave #21137 — LEGO Minecraft Set Value
LEGO MinecraftWhat the The Mountain Cave #21137 LEGO set is worth — loose, complete, and sealed.
The Mountain Cave #21137 value — Loose $165 · Complete (CIB) $881 · Sealed (new) $1,680. Prices updated August 2026.
Monthly CIB value, based on sold comps.
See the actual sold listings on eBay ↗Live on eBay right now
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Price data verified against · 1
Item details
- UPC / EAN
- 673419263818
- Brand
- LEGO
- Theme
- LEGO Minecraft
- Set number
- #21137
- Release date
- January 1, 2017
The Mountain Cave #21137 (LEGO Minecraft) resale value
A loose The Mountain Cave #21137 set runs around $165, a complete copy (all pieces + box + instructions) about $881, and a factory-sealed box commands $1680.
What drives the price
Retired sets, completeness (every piece + minifigs + instructions + box), and sealed condition drive LEGO value. Exclusive sets and discontinued themes appreciate the most; minifigs alone can carry significant value.
Price guide
What this actually trades for — sold values by condition vs. what sellers are asking today
| Condition | Value | Based on |
|---|---|---|
| Loose | $165 | eBay sold comps |
| Complete (CIB) | $881 | eBay sold comps |
| Sealed (new) | $1,680 | eBay sold comps |
| Live asking — low / typical / high | $179.98 / $549.99 / $1,850 | 20 live eBay listings ↗ |
Market check: As of July 18, 2026, 20 live eBay listings ask $179.98–$1,849.99 (median $549.99).
Frequently asked questions
- What is the best way to buy this set based on my budget?
- If you are budget-conscious, the loose version is available for $305. For a pristine collectible, the sealed option is $1578.
- How much is the complete, used version of this LEGO Minecraft set?
- The complete, in-box version (CIB) of The Mountain Cave #21137 is listed for $900.
- Is the sealed version worth the higher price point?
- Yes, the sealed, new version is priced at $1578, offering the highest collectible value for LEGO Minecraft fans.