NINJAGO®
Lloyd's Dragon Mech Battle Pack
from £8
£0.11/pc
🏆 All-time low
![Kai's Dragon Mech Battle Pack]()
NINJAGO®
#71851 · EAN 5702018031971
85 pieces · 3 minifigs · Released 2025
LEGO® NINJAGO® mech playset with 3 minifigures
£8
Cheapest at LEGO · + £3 shipping (£11 total) · ✓ In stock
✓ 3 retailers
✓ Updated daily
↓
Good time to buy
All-time low — the lowest price in 12 months
85
Pieces
3
Minifigs
2025
Year
≈ £0.09 per piece · 85 pieces
64
Heist
Great deal
Lowest in 6 months
Compare prices
Prices at 3 retailers — updated daily. How we track these prices.
T O'Neil Bricks
Best price
○ Out of stock
£8
LEGO
Official
● In stock · + £3 shipping
£8
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
Price per piece
£0.09
EAN
5702018031971
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Kai's Dragon Mech Battle Pack (LEGO set 71851) is a LEGO NINJAGO® set with 85 pieces. Compare LEGO prices for it across retailers and check the full price history before you buy.
The best price for Kai's Dragon Mech Battle Pack right now is £8 across 3 retailers — matching the official LEGO RRP of .
The 3 retailers are priced almost identically right now (£8–£9) — with a spread this small, shipping usually decides the best deal.
The lowest daily price has held steady around £8 over the past month.
Brickheist tracks the price of Kai's Dragon Mech Battle Pack daily and keeps up to 12 months of price history. Right now it's at its all-time low of £8 — 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, compared across 3 retailers and updated every day 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. The 12-month price history is shown on this page so you can spot a genuine deal.
Where can I buy Kai's Dragon Mech Battle Pack the cheapest?
Brickheist compares Kai's Dragon Mech Battle Pack across LEGO retailers so you can buy at the lowest price. See the retailer table above for live prices, stock and shipping.
£8
at LEGO