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Compare 5 retailers.

Retailer prices for 71851 are sorted by the lowest delivered price when shipping is known.

Retailer prices

Prices tracked across 10 retailers, updated twice a day.

Featured
LEGO Official Store Buy safely from the Official LEGO Store · lego.com In stock - € 5.95 shipping 25 Sep - € 15.94 not the lowest € 5.95 shipping 1 JJ Joybuy Best deal joybuy.de In stock 2-3 days € 3.99 shipping 25 Sep −31% € 10.88 € 3.99 shipping 2 OO Otto otto.de In stock 2-3 days € 4.95 shipping 25 Sep −24% € 12.58 € 4.95 shipping 3 Conrad conrad.de In stock 2-3 days € 4.95 shipping 25 Sep −15% € 13.44 € 4.95 shipping 4 LEGO.com lego.com In stock - € 5.95 shipping 25 Sep - € 15.94 € 5.95 shipping 5 II idee+spiel ideeundspiel.com In stock 2-3 days € 6.99 shipping 25 Sep −4% € 16.58 € 6.99 shipping

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Full price history at a glance.

Lowest yet
€6.78
31 Aug 2026 · Joybuy
Peak price
€9.99
11 Apr 2026 · LEGO.com
Average
€8.67
13% below RRP
RRP
€9.99
reference price

Daily lowest price tracked across 5 retailers in Germany. The dotted line marks LEGO's recommended retail price.

Source: daily measurement at 5 retailers in Germany, 11 Apr 2026 – 25 Sep 2026. RRP via LEGO.com.

Last 12 price points for LEGO 71851 Kai's Dragon Mech Battle Pack
Date Price Retailer Stock
€9.99 LEGO.com In stock
€7.63 Otto In stock
€8.49 Conrad In stock
€6.89 Joybuy In stock
€9.59 idee+spiel In stock
€9.99 LEGO.com In stock
€7.63 Otto In stock
€7.99 Conrad In stock
€6.89 Joybuy In stock
€9.06 idee+spiel In stock
€9.99 LEGO.com In stock
€7.63 Otto In stock
Price expectation

Price will likely hold steady.

28%
Low · ±6%

Low likelihood of further drops. Current price is near the all-time low.

Estimated price · next 3 months

now · €6.89 expected · €7.03
Price expectation Kai's Dragon Mech Battle Pack
Date Price Type
2026-06-27 €8.99 History
2026-06-28 €7.99 History
2026-06-29 €7.63 History
2026-06-30 €7.63 History
2026-07-01 €7.60 History
2026-07-02 €7.18 History
2026-07-03 €7.18 History
2026-07-04 €7.56 History
2026-07-05 €7.63 History
2026-07-06 €7.59 History
2026-07-07 €7.59 History
2026-07-08 €6.86 History
2026-07-09 €6.86 History
2026-07-10 €7.50 History
2026-07-11 €7.22 History
2026-07-12 €7.22 History
2026-07-13 €7.46 History
2026-07-14 €7.46 History
2026-07-15 €7.63 History
2026-07-16 €7.63 History
2026-07-17 €7.63 History
2026-07-18 €7.63 History
2026-07-19 €6.99 History
2026-07-20 €6.99 History
2026-07-21 €6.99 History
2026-07-22 €7.63 History
2026-07-23 €7.63 History
2026-07-24 €7.63 History
2026-07-25 €7.63 History
2026-07-26 €7.63 History
2026-07-27 €7.63 History
2026-07-28 €7.63 History
2026-07-29 €7.11 History
2026-07-30 €7.99 History
2026-07-31 €7.99 History
2026-08-01 €7.99 History
2026-08-02 €7.99 History
2026-08-03 €6.79 History
2026-08-04 €6.79 History
2026-08-05 €6.79 History
2026-08-06 €6.79 History
2026-08-07 €6.79 History
2026-08-08 €6.79 History
2026-08-09 €6.79 History
2026-08-10 €6.79 History
2026-08-11 €6.79 History
2026-08-12 €6.79 History
2026-08-13 €6.79 History
2026-08-14 €6.79 History
2026-08-15 €6.79 History
2026-08-16 €6.79 History
2026-08-17 €6.79 History
2026-08-18 €6.79 History
2026-08-19 €6.79 History
2026-08-20 €6.79 History
2026-08-21 €6.79 History
2026-08-22 €6.79 History
2026-08-23 €6.79 History
2026-08-24 €6.79 History
2026-08-25 €6.79 History
2026-08-26 €6.79 History
2026-08-27 €6.79 History
2026-08-28 €7.01 History
2026-08-29 €6.79 History
2026-08-30 €6.79 History
2026-08-31 €6.78 History
2026-09-01 €6.78 History
2026-09-02 €6.78 History
2026-09-03 €6.78 History
2026-09-04 €6.78 History
2026-09-05 €6.78 History
2026-09-06 €6.78 History
2026-09-07 €6.78 History
2026-09-08 €6.96 History
2026-09-09 €6.96 History
2026-09-10 €6.96 History
2026-09-11 €6.96 History
2026-09-12 €6.96 History
2026-09-13 €6.96 History
2026-09-14 €6.86 History
2026-09-15 €6.86 History
2026-09-16 €6.86 History
2026-09-17 €6.86 History
2026-09-18 €6.86 History
2026-09-19 €6.86 History
2026-09-20 €6.86 History
2026-09-21 €6.86 History
2026-09-22 €6.89 History
2026-09-23 €6.89 History
2026-09-24 €6.89 History
2026-09-25 €6.89 History
2026-10-25 €6.94 Forecast
2026-11-24 €6.98 Forecast
2026-12-24 €7.03 Forecast
€9.99 RRP
€6.78 Lowest · 90 days
€9.99 Highest · 90 days
Stable Trend

About this set

For LEGO Kai's Dragon Mech Battle Pack (71851), we track 5 retailers in Germany, with 5 currently in stock. This set from the NINJAGO theme has 85 pieces, including 3 minifigures and was released in 2026. The current lowest price is €6.89 at Joybuy, 31% below the RRP of €9.99. That works out to €0.08 per piece and a saving of €3.10 versus the RRP. The lowest price ever was €6.78 on 31 Aug 2026 at Joybuy. The set is recommended for builders aged 6 and up. The current price is above that low, so waiting for a drop may pay off. Use price history and stock data to judge whether this is a good time to buy.

Dimensions
14.1 × 12.2 × 4.6 cm
Pieces
85
Age
6+
Explore more

Dive deeper into this set.

All about this set

Boys, girls and fans of the NINJAGO® Dragons Rising TV show ages 6 and up can enjoy hours of imaginative play with the LEGO® NINJAGO Kai’s Dragon Mech Battle Pack (71851) building set. This playset features a dragon mech toy with posable legs, large wings, claw hands and an upper body that rotates 360 degrees, plus a cockpit to place a minifigure inside. This great value ninja toy also comes with 3 minifigures: Kai with 2 sword accessories, Sora with 2 swords and an Earth Monster toy with clawhands, letting kids enjoy hours of adventures as they act out scenes from season 4 of NINJAGO Dragons Rising. The LEGO NINJAGO range of building sets and adventure toys for kids includes detailed mechs, dragons and temples so fans can role-play awesome ninja action. Kids can build each playset with confidence using the LEGO Builder app – zoom, rotate in 3D and track progress with easy-to-follow digital instructions. Set contains 85 pieces.

I picked up this little mech cause it looked pretty cool. It's pretty small and the build is fairly basic, but the value is excellent! 3 minifigs for under 10 bucks is pretty sweet.
OfficerFancyCucumber100 · LEGO.com
Media

View the set from every angle.

7 images
LEGO Kai's Dragon Mech Battle Pack (71851) Front view LEGO Kai's Dragon Mech Battle Pack (71851) - image 1 Image 2 LEGO Kai's Dragon Mech Battle Pack (71851) - image 2 Image 3 LEGO Kai's Dragon Mech Battle Pack (71851) - image 3 Image 4 LEGO Kai's Dragon Mech Battle Pack (71851) - image 4 Image 5 LEGO Kai's Dragon Mech Battle Pack (71851) - image 5 Image 6
Reference

Set details

Set number 71851
Theme NINJAGO
Subtheme Dragons Rising Season 4
Year 2026
Pieces 85
Minifigures 3
Price per piece €0.08
Age 6+
Dimensions 14.1 × 12.2 × 4.6 cm
RRP €9.99
Parts

Parts inventory

85
pieces
31 unique parts across 8 colors
Distinctive parts
  • Tile Round 2 x 2 with Gold Dragon Head on Dark Blue Background print Part ID 14769pr0027
  • Creature Body Part, Dragon / Thestral Wing with Bar Connection and Marbled Bright Light Orange Pattern Part ID 38547pat0002
  • Flames 5 x 7 x 1 x 1/3 with Studs, Handle Part ID 7727
Building instructions Kai's Dragon Mech Battle Pack instruction manual

Minifigures in Kai's Dragon Mech Battle Pack.

3 minifigures according to this set's Rebrickable inventory.

All minifigures
Earth Monster fig-017132
Earth Monster
fig-017132
Kai (Draconus Form (No Wings or Tails)) fig-017139
Kai (Draconus Form (No Wings or Tails))
fig-017139
Sora (Mask (Draconus Robes)) fig-017126
Sora (Mask (Draconus Robes))
fig-017126
More guides
01 / 02
Frequently asked questions

All about the Kai's Dragon Mech Battle Pack.

What is the lowest price for Kai's Dragon Mech Battle Pack?
The lowest current price we show is €6.89.

Has LEGO 71851 ever been cheaper?
The lowest historical price was €6.78 on 31 Aug 2026 at Joybuy.

How many pieces does LEGO 71851 have?
This set has 85 pieces.

Which minifigures are included in LEGO 71851?
This set includes 3 minifigures, including Earth Monster, Kai (Draconus Form, Sora.

What year is this set from?
LEGO 71851 was released in 2026.

What is the RRP for LEGO 71851?
LEGO's recommended retail price is €9.99.

What is the recommended age for LEGO 71851?
LEGO recommends ages 6+ for this set.

Is LEGO 71851 still available?
Yes, this set is currently available at 5 retailers.

Which retailers do you compare?
We currently compare 5 retailer prices for this set.

How often do you update prices?
We check prices multiple times per day at every tracked retailer and publish the most recent value on this page.