NINJAGO®
Nya vs. Mutation Monster Spinner
from £8.95
£0.18/pc
🏆 All-time low
![Kai's Dragon Mech Battle Pack]()
NINJAGO®
#71851 · EAN 5702018031971
85 pieces · 3 minifigs · Released 2025
£8.99
Cheapest at LEGO · + £3.95 shipping (£12.94 total) · ✓ In stock
✓ 5 retailers
✓ Prices checked today ·
LEGO® NINJAGO® mech playset with 3 minifigures
↓
Good time to buy
All-time low — the lowest price in 12 months
85
Pieces
3
Minifigs
2025
Year
≈ £0.11 per piece · 85 pieces
60
Heist
Great deal
Lowest in 6 months
📄 Building instructions (LEGO.com)
📚 Set details: Brickset · Rebrickable
Compare prices
Prices at 5 retailers — last checked today. · How we track these prices.
T O'Neil Bricks
○ Out of stock
£8.99
LEGO
Best price
Official
● In stock · + £3.95 shipping (£12.94 total)
£8.99
Hamleys
● In stock · + £3.99 shipping
£8.99
The Entertainer
● In stock · + £3.99 shipping
£9
Retired Sets
● In stock
£9
Price history — last 90 days
Lowest price across listed retailers.
Lowest price
Specifications
Set #
71851
Theme
NINJAGO®
Pieces
85
Minifigs
3
Year
2025
Status
In production
All-time low
£8.99
Price per piece
£0.11
EAN
5702018031971
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The best price for Kai's Dragon Mech Battle Pack right now is £8.99 across 5 retailers — matching the official LEGO RRP of .
The 5 retailers are priced almost identically right now (£8.99–£9) — with a spread this small, shipping usually decides the best deal.
The lowest daily price has held steady around £8.99 over the past month.
Right now it's at its all-time low of £8.99 — a great moment to buy.
Frequently asked questions
How much does Kai's Dragon Mech Battle Pack cost?
The cheapest tracked price for Kai's Dragon Mech Battle Pack is £8.99, compared across 5 retailers on Brickheist.
What is the lowest price for Kai's Dragon Mech Battle Pack?
The all-time low we've recorded for Kai's Dragon Mech Battle Pack (set 71851) is £8.99. The 12-month price history is shown on this page so you can spot a genuine deal.
£8.99
at LEGO