Retailer prices for 71851 are sorted by the latest lowest price.
Retailer prices
Price history 71851
We check Dutch retailers every day. This graph shows the full daily-low price series we have for this set.
Daily lowest price tracked across 35 Dutch retailers. The dotted line marks LEGO's recommended retail price.
Source: daily measurement at 35 Dutch retailers, 14 Dec 2025 – 31 May 2026. RRP via LEGO.com.
| Date | Price | Retailer | Stock |
|---|---|---|---|
| €9,99 | MediaMarkt | In stock | |
| €9,99 | Supra Bazar | In stock | |
| €8,99 | Kruidvat | In stock | |
| €9,95 | Blokkenpiloot | In stock | |
| €8,56 | Kitstore | In stock | |
| €9,99 | De Kinderplaneet | In stock | |
| €9,99 | Toyhouse | In stock | |
| €11,00 | SportsWorld | In stock | |
| €9,95 | SpeelGoedNL | In stock | |
| €9,99 | BRICKshop | In stock | |
| €8,99 | Coppens Warenhuis | In stock | |
| €9,49 | Conrad | In stock |
Calibrated forecast based on historical pricing, seasonal patterns and retailer behavior. Tuned conservatively: rather cautious than optimistic.
Signal is mixed. Small movements are more likely than a big drop.
How LEGO 71851 compares to RRP and history.
For LEGO Kai's Dragon Mech Battle Pack (71851), we track 22 retailers in the Netherlands, with 22 currently in stock. The current lowest price is €8,50. Use price history and stock data to judge whether this is a good time to buy.
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.
All about this set
Background, build experience, collector context, and buying notes in one story.
For LEGO Kai's Dragon Mech Battle Pack (71851), we track 22 retailers in the Netherlands, with 22 currently in stock. The current lowest price is €8,50. Use price history and stock data to judge whether this is a good time to buy.
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.
The current lowest price is €8,50 across 22 tracked retailers.
Instructions & specifications
Dimensions, pieces, build steps, and the official PDF building instruction.
Parts inventory
Known set data around pieces and build context.
Plates Round Curved and Dishes
Plate Special 1 x 2 Rounded with 2 Open Studs
Part ID 35480 · Dark Red
Qty 8
Plates Special
Plate Special 1 x 2 with 5.9mm Towball Socket and Towball
Part ID 14419 · Dark Bluish Gray
Qty 4
Plate Special 1 x 2 5.9mm Centre Side Towball Socket
Part ID 14704 · Light Bluish Gray
Qty 4
Plate Special 1 x 2 with End Towball
Part ID 22890 · Dark Bluish Gray
Qty 2
Plate Special 2 x 3 with Rocks
Part ID 27261 · Red
Qty 2
Bracket 2 x 2 with 1 x 2 Vertical Studs
Part ID 41682 · Black
Qty 2
![Plate Special 1 x 2 [Open O Top Clip] (44861)](https://images.bricksdeal.com/parts/44861-0-27ec82b743bc.jpg)
Plate Special 1 x 2 [Open O Top Clip]
Part ID 44861 · Black
Qty 2
![Plate Special 1 x 2 [Side Handle Closed Ends] (48336)](https://images.bricksdeal.com/parts/48336-4-c18ac0fe892b.jpg)
Plate Special 1 x 2 [Side Handle Closed Ends]
Part ID 48336 · Red
Qty 2
![Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] (60897)](https://images.bricksdeal.com/parts/60897-25-a02d6f21a6ad.jpg)
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]
Part ID 60897 · Orange
Qty 2
Bracket 1 x 2 - 1 x 2 Inverted
Part ID 99780 · Orange
Qty 2
Plate Special 1 x 2 with Clip Horizontal on Side
Part ID 11476 · Dark Red
Qty 1
Plate Special, 2 x 2 Studs and Handle, Closed Ends (Mech Chest Plate / Armor)
Part ID 27167 · Dark Red
Qty 1
Plate Special 1 x 2 with 2 End Towballs
Part ID 3170 · Black
Qty 1
Cockpit 4 x 2 x 3 with Pin Hole, and 2 Clips
Part ID 98876 · Dark Bluish Gray
Qty 1
Animal / Creature Body Parts
Creature Body Part, Barb Large (Claw, Talon) with Clip
Part ID 16770 · Pearl Gold
Qty 4
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small
Part ID 53451 · Black
Qty 4
Creature Body Part, Dragon / Thestral Wing with Bar Connection and Marbled Bright Light Orange Pattern
Part ID 38547pat0002 · Red
Qty 2
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small
Part ID 53451 · Black · Spare
Qty 1
Minifig Shields, Weapons, & Tools
![Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] (21459)](https://images.bricksdeal.com/parts/21459-297-7a62fcaeee7e.jpg)
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]
Part ID 21459 · Pearl Gold
Qty 4
Weapon Hilt Symmetric
Part ID 66909 · Dark Bluish Gray
Qty 1
Tiles Round and Curved
Tile Round 1 x 1 Half Circle
Part ID 24246 · Red
Qty 4
Tile Round 2 x 2 with Gold Dragon Head on Dark Blue Background print
Part ID 14769pr0027 · Pearl Gold
Qty 1
Tile Round 1 x 1 Half Circle
Part ID 24246 · Red · Spare
Qty 1
Bricks Sloped
![Slope 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] (22388)](https://images.bricksdeal.com/parts/22388-182-8863f5828f83.jpg)
Slope 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid]
Part ID 22388 · Trans-Orange
Qty 3
Slope 45° 2 x 1 Triple with Inside Stud Holder
Part ID 15571 · Red
Qty 2
![Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] (3660)](https://images.bricksdeal.com/parts/3660-4-bdc64dcc74bf.jpg)
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]
Part ID 3660 · Red
Qty 2
Slope 30° 1 x 1 x 2/3 (Cheese Slope)
Part ID 54200 · Orange
Qty 1
Slope 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid]
Part ID 22388 · Trans-Orange · Spare
Qty 1
Slope 30° 1 x 1 x 2/3 (Cheese Slope)
Part ID 54200 · Orange · Spare
Qty 1
Bricks Curved
Slope Curved 2 x 2 x 2/3
Part ID 15068 · Red
Qty 2
Tiles
Tile 1 x 2 with Groove
Part ID 3069b · Trans-Orange
Qty 2
Bricks Special
Brick Special 1 x 1 with Studs on 2 Sides
Part ID 47905 · Dark Bluish Gray
Qty 1
Technic Pins
Technic Pin with Friction Ridges Lengthwise with No Center Slots
Part ID 61332 · Black
Qty 1
Technic Pin with Friction Ridges Lengthwise with No Center Slots
Part ID 61332 · Black · Spare
Qty 1
Technic Bricks
Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate
Part ID 73109 · Red
Qty 1
Energy Effects
Flames 5 x 7 x 1 x 1/3 with Studs, Handle
Part ID 7727 · Trans-Orange
Qty 1
Minifig Neckwear
Minifig Neckwear Bandana (Ninjago)
Part ID 15619 · Dark Blue · Spare
Qty 1
Retailer reviews
Summarized retailer review data when available.
I got this set by chance while visiting a LEGO Store with my mom. She noticed it first and really liked how small and cute it looks, so she bought it for me as a Children’s Day gift (even though I’m already 33 LOL). It’s a very impressive set for the price. The wing and tail pieces look great, and getting 3 minifigures for only $10 makes it excellent value overall.
It’s a wonderful set I absolutely recommend it great minifigures although I wish Kai had his dragon wings and tail but I feel like the set makes up for it, I genuinely feel like this is the best build of the last 3 $10 mechs Lego has been making for the past years. I believe it is a great value for your money if you are a kid especially. It is one great option for kids who may not have the access to the more expensive sets of the wave of 2026 Ninjago. Overall 100% recommend. And I hope we keep getting these for many years.
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.
I really like this set! It's a cute simple dragon like mech that will please anyone of any age who wants a cheap way to get 3 good figures and a mech full of personality. The posability here is great, it's fun and expressive and the size is good for $12.99 CAD! The figure choice is also good! The earth Monster is nice and Getting kai in a cheaper set is a plus. Sora is good too thought if you got last year's summer sets, you have her already. This a very simple set but it does what it does excellently. I can't complain it's a perfect set and it's good fun for kids
All retailer prices
Current prices, stock and discounts per retailer.
Price context
Lowest, highest and average price for this set.
This context is based on 1983 price points across 22 retailers. The chart on the page remains the full interactive source.
Price forecast
Conservative baseline for the next period.
The signal is mixed. Small movements are more likely than a large drop.
FAQ & set details
Pieces, year, RRP and retailer coverage.
Other sets from the same theme for price comparison.
Quick answers about price, stock and set data.