What is the cheapest current price for LEGO 71851-1?

The cheapest current price for LEGO 71851-1 (Kai's Dragon Mech Battle Pack) is €6.89 at Joybuy DE, across 35 European retailers we track.

How much does LEGO 71851-1 cost?

LEGO 71851-1 ranges from €6.89 (Joybuy DE) to €119.90 (LEGO.com NO) across 35 European retailers tracked by BrickPrice.

What's the all-time-low price for LEGO 71851-1?

The all-time-low price for LEGO 71851-1 since BrickPrice began tracking is €6.70. The current cheapest is €6.89.

Is LEGO 71851-1 on sale?

Yes — the cheapest tracked price for LEGO 71851-1 is 31% below LEGO's recommended retail price of €9.99, currently €6.89.

Where can I buy LEGO 71851-1 for the lowest price?

The cheapest tracked seller for LEGO 71851-1 is Joybuy DE shipping from DE, currently listing at €6.89.

Ninjago

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SET #71851-1

Kai's Dragon Mech Battle Pack

Name: Kai's Dragon Mech Battle Pack
Brand: LEGO
SKU: 71851-1
Availability: InStock

Price · Steinehelden DE€7.13Buy

Rating: –

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.

Price Information

Current price

€6.89

€0.19 vs 6-month low

Lego retail price

€9.99

8.11 ct/brick

Half-Year Low

€6.70

Highest price ever

€19.82

Price is 31% below the initial Lego retail price, a €3.10 discount! This comes down to 8.11 cent per brick.

Add this set to your brickwatch

Price List (37)

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Price · Steinehelden DE€7.13Buy

Platform	Country/Region	Description	Rating	Price	Delivered	Changed	Currency	Link
LEGO.com UK	GB	Kai's Dragon Mech Battle Pack	★ 3.0	£8.99	£12.94	-	GBP	Go
Joybuy DE	DE	LEGO Ninjago 71851 Kais Drachen-Mech Battle Set	-	€6.89	€10.88	-	EUR	Go
Steinehelden DE	DE	LEGO® Kais Drachen-Mech Battle Set - 71851	-	€7.13	€7.13	May 20	EUR	Go
Toys4kids12 AT	AT	LEGO NINJAGO 71851 Kais Drachen-Mech Battle Set	-	€7.90	€7.90	↑ €0.60Jun 2	EUR	Go
Goodbricks	NL	LEGO Ninjago - Kai's Dragon Mech Battle Pack 71851	★ 4.1	€7.95	€7.95	Apr 18	EUR	Go
VSR Spielwaren DE	DE	LEGO® NINJAGO® 71851 - Kais Drachen-Mech Battle Set	-	€7.99	€7.99	May 20	EUR	Go
Joybuy FR	FR	LEGO Ninjago 71851 Pack de combat : le robot dragon de Kai	-	€7.99	€11.98	-	EUR	Go
Brickmo	DE	LEGO Ninjago 71851 Kais Drachen-Mech Battle Set...	-	€8.02	€8.02	↑ €0.07Aug 26	EUR	Go
KelCha Toys	NL	LEGO Ninjago - Kai's drakenmecha strijdpakket 71851	★ 3.7	€8.50	€8.50	Apr 21	EUR	Go
Mister Bricks	NL	LEGO Ninjago 71851 Kai's drakenmecha strijdpakket	★ 4.5	€8.95	€8.95	Apr 18	EUR	Go
Proshop AT	AT	LEGO Ninjago 71851 Kais Drachen-Mech Battle Set	-	€9.50	€9.50	↓ €2.2011d ago	EUR	Go
Amazon.it	IT	Kai's Dragon Mech Battle Pack	★ 3.4	€9.90	€9.90	↑ €0.5520d ago	EUR	Go
LEGO.com CH	CH	Kais Drachen-Mech Battle Set	★ 4.0	CHF 9.90	CHF 17.40	-	CHF	Go
BRICKshop	NL	LEGO 71851 Kai's Drakenmecha Strijdpakket	★ 3.4	€9.99	€9.99	Apr 18	EUR	Go
Unieke Bricks	NL	LEGO 71851 Ninjago Kai’s drakenmecha strijdpakket	★ 4.6	€9.99	€9.99	Apr 19	EUR	Go
DreamLand NL	NL	71851 LEGO Ninjago Kai's drakenmecha strijdpakket	★ 2.3	€9.99	€9.99	Apr 21	EUR	Go
bol	NL	LEGO® NINJAGO® Kai's Drakenmecha Strijdpakket - Mechaspeelgoed - Speelset met 3 Minifiguren - 71851	★ 3.7	€9.99	€9.99	↑ €1.50Jul 9	EUR	Go
BrickFever	NL	LEGO Ninjago - Kai's drakenmecha strijdpakket - 71851	★ 4.6	€9.99	€9.99	Apr 19	EUR	Go
Universal AT	AT	Konstruktionsspielsteine »Kais Drachen-Mech Battle Set (71851), LEGO Ninjago«	-	€9.99	€9.99	10d ago	EUR	Go
Cdiscount	FR	LEGO NINJAGO 71851 Pack de Combat : le Robot Dragon de Kai - Jouet de Construction 6 ans	★ 3.3	€9.99	€9.99	↑ €1.2011d ago	EUR	Go
LEGO.com DE	DE	Kais Drachen-Mech Battle Set	★ 4.5	€9.99	€13.49	-	EUR	Go
LEGO.com ES	ES	Pack de Combate: Meca Dragón de Kai	★ 4.0	€9.99	€15.94	-	EUR	Go
LEGO.com FR	FR	Pack de combat: le robot dragon de Kai	★ 5.0	€9.99	€15.94	-	EUR	Go
LEGO.com NL	NL	Kai's drakenmecha strijdpakket	★ 4.0	€9.99	€15.94	-	EUR	Go
Mediamarkt	NL	Lego Ninjago 71851 Kai's Drakenmecha Bouwstenen Multicolor	★ 3.0	€9.99	€9.99	-	EUR	Go
LEGO.com IT	IT	Battle Pack Mech Drago di Kai	★ 4.0	€9.99	€16.99	-	EUR	Go
LEGO.com AT	AT	Kais Drachen-Mech Battle Set	★ 4.0	€9.99	€15.94	-	EUR	Go
Proshop NL	NL	LEGO Ninjago 71851 Kai's drakenmecha strijdpakket	★ 3.7	€10.53	€10.53	↑ €0.14Jun 4	EUR	Go
LEGO.com FI	FI	Kain lohikäärmetaistelupakkaus	★ 4.0	€11.95	€17.90	-	EUR	Go
Playpolis AT	AT	LEGONinjago - 71851 Kais Drachen-Mech Battle Set	-	€12.59	€12.59	↓ €1.4011d ago	EUR	Go
Miravia ES	ES	LEGO - Juego de construccion Pack De Combate: Meca Dragón De Kai Lego Ninjago (71851)	-	€14.72	€14.72	Jun 14	EUR	Go
Pixmania FR	FR	LEGO Ninjago 71851 Pack de combat : le robot dragon de Kai	-	€18.79	€18.79	-	EUR	Go
LEGO.com PL	PL	Smok-mech Kaia - zestaw bitewny	★ 4.0	PLN 41.99	PLN 66.99	-	PLN	Go
LEGO.com DK	DK	Kais drage-mech - kamppakke	★ 4.0	DKK 89.95	DKK 139.95	-	DKK	Go
LEGO.com NO	NO	Stridspakke med Kais dragerobot	★ 4.0	NOK 119.90	NOK 179.90	-	NOK	Go
Ottoversand AT	AT	Konstruktionsspielsteine »Kais Drachen-Mech Battle Set (71851), LEGO Ninjago«	-	Check price →	—	-	EUR	Go
Wehkamp	NL	Kai's Dragon Mech Battle Pack	★ 3.4	Check price →	—	-	EUR	Go

Price History

Lowest price per day, across all tracked shops

Theme

Ninjago

Year

2026

Parts

Minifigs

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Description

Details

Titel van set: LEGO 71851-1 Kai's Dragon Mech Battle Pack
Alternatieve omschrijving: MECH TOY FOR KIDS – Kai’s Dragon Mech Battle Pack (71851) building toy lets boys and girls ages 6 and up role-play action from season 4 of the NINJAGO® Dragons Rising TV show
Aantal onderdelen: 85
Leeftijd: 6+
Thema: Ninjago
Gemonitord sinds: April 2026
Released: January 2026
Bouwbeschrijvingen: Download de bouwbeschrijvingen ↗
EAN: 5702018031971
UPC: 673419419215
Shortlink: brickprice.eu/s/71851-1

Best price for LEGO 71851 Kai's Dragon Mech Battle Pack

LEGO 71851-1 (Kai's Dragon Mech Battle Pack) currently sells for €6.89 at Joybuy DE — the cheapest of 35 tracked European retailers, as of 2026-10-15. RRP €9.99.

That's a 31% discount versus RRP, a saving of €3.10.

The all-time low across our tracking history is €6.70.

At 85 pieces, that works out to 0.081 € per brick — a useful benchmark when comparing to similar sets.

Kai's Dragon Mech Battle Pack is part of the LEGO Ninjago range. Browse other Ninjago sets and their current European prices on the BrickPrice Ninjago page.