21137The Mountain Cave
- 2017released
- 2,863pieces
- 6minifigures
- Minecrafttheme
Typical new & sealed
£21.26
from £7.99 · 0.7p/piece
Typical used & complete
–
from £700 · too few listings
View on eBay →
Updated 2h ago · 13 listings found
Price history
eBay UK · median Buy It Now asking price
We started tracking this set on 18 Oct 2026. The chart fills in as we record prices each day.
13 listings
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LEGO MINECRAFT SKELETON IN PEARL GOLD ARMOUR + BOW FROM SET 21137 (min054) UK
New & sealed
📦 Box 📘 Instructions brickbuilder66 · 99.7% · 14,319 feedback£7.99 free postage 0.3p/piece ⚠ 62% below · too good to be true? -
2 x LEGO MINECRAFT SLIME CUBES FROM SET 21137 UK
New & sealed
📦 Box 📘 Instructions brickbuilder66 · 99.7% · 14,319 feedback£8.75 free postage 0.3p/piece ⚠ 59% below · too good to be true? -
LEGO MINECRAFT STEVE IN FULL SILVER ARMOUR FROM SET 21137 (min053) UK
New & sealed
📦 Box 📘 Instructions brickbuilder66 · 99.7% · 14,319 feedback£9.99 free postage 0.3p/piece ⚠ 53% below · too good to be true? -
LEGO MINECRAFT ALEX IN FULL DIAMOND ARMOUR FROM SET 21137 (min051) UK
Used · not stated
chfow4656 · 99.6% · 572 feedback£11.28 incl. £1.55 postage 0.4p/piece Not enough data -
LEGO MINECRAFT ALEX IN FULL DIAMOND ARMOUR FROM SET 21137 (min051) UK
Used · not stated
mulhernco · 100% · 89 feedback£13.41 incl. £2.62 postage 0.5p/piece Not enough data -
LEGO MINECRAFT ALEX IN FULL DIAMOND ARMOUR FROM SET 21137 (min051) UK
New & sealed
📦 Box 📘 Instructions brickbuilder66 · 99.7% · 14,319 feedback£13.99 free postage 0.5p/piece 34% below typical -
6 x LEGO MINECRAFT SLIME CUBES FROM SET 21137 UK
New & sealed
📦 Box 📘 Instructions dgoggle · 99.7% · 432 feedback£21.26 incl. £2.26 postage 0.7p/piece About typical -
LEGO Minecraft 21137 The Mountain Cave Complete With Figures Box Instructions UK
Used · complete
📘 Instructions ⏱ 6d 18h · 1 bid pantyhamster1978 · 100% · 394 feedback£244 incl. £14.30 postage 8.5p/piece Current bid -
LEGO Minecraft 21137 The Mountain Cave Complete With Figures Box Instructions UK
Used · complete
📘 Instructions starkiesshop · 100% · 1,718 feedback£700 free postage 24.4p/piece Not enough data -
LEGO Minecraft: The Mountain Cave 21137 UK
New & sealed
📦 Box 📘 Instructions only_lego · 100% · 578 feedback£1,225 incl. £45.00 postage 42.8p/piece 5661% above typical -
LEGO Minecraft: The Mountain Cave Building Set (21137) UK
New & sealed
📦 Box 📘 Instructions astvaitkunien_0 · 99.9% · 1,259 feedback£1,254 incl. £22.95 postage 43.8p/piece 5797% above typical -
LEGO Minecraft: The Mountain Cave 21137 Very Rare. New And Sealed. UK
New & sealed
📦 Box 📘 Instructions sebastianstanley · 100% · 89 feedback£1,521 incl. £20.75 postage 53.1p/piece 7053% above typical -
LEGO Minecraft: The Mountain Cave (21137) #Brand New, Sealed Box# UK
New & sealed
📦 Box 📘 Instructions gillianjackson77 · 100% · 15 feedback£1,639 postage not shown 57.2p/piece 7608% above typical
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Before you buy 21137
- Check all 6 minifigures are included. Minifigures are the first thing sold off from used sets, and often the most valuable part.
- “Complete” should mean all 2,863 pieces. Ask the seller whether they checked against the inventory or just think it's complete.
- Sealed means factory seals intact. Ask for photos of the seals and box corners; box condition moves the price a lot on retired sets.
- Check the seller's feedback. For a retired set, stick to sellers with 98%+ feedback and a history of selling LEGO.
- Watch out for knock-offs. Brands like Lepin and Mould King copy popular sets. Look for the LEGO logo on the box and bricks.
- Pay through eBay. eBay's Money Back Guarantee covers items that don't match the description, but only if you pay through eBay.
Questions
How much is LEGO 21137 The Mountain Cave worth?
Based on current eBay UK Buy It Now listings, a new sealed set typically costs £21.26, including postage. These are asking prices, so a set can sell for less.
How many pieces are in LEGO 21137?
The Mountain Cave has 2,863 pieces and 6 minifigures. It was released in 2017.
What is the price per piece of 21137?
At the typical sealed price of £21.26 it works out at 0.7p per piece.
