51515Robot Inventor
- 2020released
- 949pieces
- Mindstormstheme
Typical new & sealed
£488
from £399 · 51.4p/piece
Typical used & complete
–
from – · too few listings
View on eBay →
Updated 2h ago · 12 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.
12 listings
-
LEGO Mindstorms Robot Inventor Building Kit (51515) UK
New & sealed
📦 Box 📘 Instructions ⏱ 5d 20h · 0 bids kipzreal · 100% · 198 feedback£176 incl. £10.00 postage 18.5p/piece Current bid -
£250 free postage 26.3p/piece Not enough data -
LEGO Mindstorms 51515 Robot Inventor Construction Set Used UK
Used · not stated
nailit-53 · 100% · 22 feedback£272 incl. £10.98 postage 28.6p/piece Not enough data -
LEGO MINDSTORMS Robot Inventor 51515 Complete Set 949 pcs 10+ Box Instr UK
New & sealed
📦 Box 📘 Instructions skiora09 · 100% · 664 feedback£399 free postage 42.1p/piece 18% below typical -
Lego Mindstorms Set 51515 Robot Inventor - NEW -Open Box with Sealed Bags - READ UK
New & sealed
📦 Box 📘 Instructions afrojimbob · 100% · 2,719 feedback£470 free postage 49.5p/piece About typical -
LEGO 51515 LEGO MINDSTORMS Robot Inventor New Sealed BNIB UK
New & sealed
📦 Box 📘 Instructions bbosmo.qah2wmx · 100% · 83 feedback£474 incl. £8.52 postage 50.0p/piece About typical -
LEGO 51515 Mindstorms Robot Inventor | Collectors | Brand New Still in Box UK
New & sealed
📦 Box 📘 Instructions tabsat · 100% · 3,634 feedback£480 incl. £9.99 postage 50.6p/piece About typical -
LEGO Mindstorms Robot Inventor 51515 Educational Building Kit UK
New & sealed
📦 Box 📘 Instructions astvaitkunien_0 · 99.9% · 1,259 feedback£488 incl. £11.76 postage 51.4p/piece About typical -
LEGO 51515 Mindstorms Robot Inventor Robotics #2 - RETIRED **Ready To Dispatch** UK
New & sealed
📦 Box 📘 Instructions debsluv23 · 100% · 433 feedback£527 incl. £10.00 postage 55.5p/piece 8% above typical -
LEGO MINDSTORMS: Robot Inventor (51515) UK
New & sealed
📦 Box 📘 Instructions hermhog · 0% · 535 feedback · ⚠ check carefully£534 incl. £16.82 postage 56.2p/piece 9% above typical -
LEGO MINDSTORMS: Robot Inventor (51515) UK
New & sealed
📦 Box 📘 Instructions tim_wiffen · 100% · 82 feedback£541 free postage 57.0p/piece 11% above typical -
LEGO MINDSTORMS 51515 Robot Inventor Electronic Set 10+ Boxed UK
New & sealed
📦 Box 📘 Instructions fujifree · 100% · 102 feedback£580 incl. £12.32 postage 61.1p/piece 19% above typical
Only seeing UK listings. Compare all 5 countries →
Before you buy 51515
- “Complete” should mean all 949 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 set at this price, 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 51515 Robot Inventor worth?
Based on current eBay UK Buy It Now listings, a new sealed set typically costs £488, including postage. These are asking prices, so a set can sell for less.
How many pieces are in LEGO 51515?
Robot Inventor has 949 pieces. It was released in 2020.
What is the price per piece of 51515?
At the typical sealed price of £488 it works out at 51.4p per piece.
