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Rontu the Master Dragon

Catalogue image of Rontu the Master Dragon

Rontu the Master Dragon (71842-1) is a set in the Ninjago theme, released in 2025. It has 363 pieces and 4 minifigures.

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  • Number71842-1
  • ReleasedJune 2025
  • Pieces363
  • Box size26.2 × 19.1 × 7.2 cm
  • ThemeNinjago

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 47.32 USD, taken from 30 days with a price on record.

Since 9/25/2026 the lowest shop price has risen from 45.60 USD to 47.53 USD, by 4 % (based on 42 days with a price on record).

LEGO planned to retire this set in July 2026.

Product details
Number
71842-1
Name
Rontu the Master Dragon
Theme
Ninjago
Released
June 2025
Launched
June 2025
Retired
July 2026 in the United States
Pieces
363
Minifigures
4
RRP
≈ 42.13 USD (59.99 CAD) (Canada)≈ 50.50 USD (44.99 EUR) (Germany)≈ 52.79 USD (39.99 GBP) (United Kingdom)49.99 USD (United States)
Price per piece
≈ 0.116 USD (0.165 CAD) (Canada)≈ 0.139 USD (0.124 EUR) (Germany)≈ 0.145 USD (0.110 GBP) (United Kingdom)0.138 USD (United States)
Best price (30 days)
47.32 USD
Price per piece (best offer)
0.131 USD
Barcodes from shop data, not confirmed
EAN-13 5702017815756

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

BrickLink market data

We hold no current BrickLink prices for this set right now. BrickLink's own price guide is one click away.

View the price guide on BrickLink

The term 'Bricklink' is a trademark of Bricklink, Inc. This application uses the Bricklink API but is not endorsed or certified by Bricklink, Inc.

Description from LEGO.com

LEGO® NINJAGO® dragon toy playset with 4 minifigures

Read the full description

LEGO® NINJAGO® Rontu the Master Dragon (71842) toy lets ninja fans aged 7 and up recreate action-packed scenes from season 3 of the NINJAGO Dragons Rising TV show. This building set for kids features a dragon toy with a posable tail, legs, wings, head and jaw, 2 positions to place a minifigure on its back and a stud shooter under each wing. 4 NINJAGO minifigures are included in the LEGO playset: ninja warriors Lloyd, Sora and Wyldfyre, each with a ninja weapon accessory, plus Master of Misfortune, Zarkt, for kids to play out epic good vs. evil battles. There is also a brick-built mini shrine with a secret message that Lloyd reveals with his translucent reveal blade accessory. Sets and buildable action toys in the LEGO NINJAGO range (sold separately) include mechs, vehicles and temples so fans can role-play ninja action. Each ninja playset can be created with the LEGO Builder app, which guides you and your child on an easy and intuitive building adventure. Set contains 381 pieces.

Source: LEGO Shop Advertising

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Pricing
Best price ever≈ 44.80 USD (39.99 EUR) Advertising Sealed · gross · idee+spiel · seen 10/5/2026 Not compared yet, no exchange rate: 1 in other currencies
Current best offer≈ 47.53 USD (42.52 EUR) Advertising Sealed · gross · idee+spiel · seen 11/3/2026
Lowest completed sale ≈ 28.93 USD (25.81 EUR) Good · net · BrickLink · sold 10/22/2026

Price history

  • Lowest shop price now47.53 USD
  • Lowest ever 44.80 USD

Each day's lowest price among the shops' current offers, including VAT. A price in another currency is converted at the ECB reference rate of its day.

Monthly lows as a table
Month Lowest price
November 2026 47.50 USD
October 2026 44.80 USD
September 2026 45.41 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition
Good · net1 sold 10/6/2026 – 11/5/2026 — not enough to value yet.
Sources BrickLink: 1019 · idee+spiel: 41 · Proshop: 40 · LEGO® Shop (FR): 8 · LEGO® Shop (BR): 5 · BRICKMO: 3 · Baustein Store: 3

Latest price from each shop

Sorted: lowest price first Show highest first
Countries (all)
Show prices for

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What each source tells us:

  • Shops: the country they are in, and a delivery within it. None says whether it delivers abroad.
  • LEGO's own shops: one storefront per country, each delivering within its country.
  • Hugendubel: in Germany, delivering to Germany and to Austria.
  • eBay: the country the item is in, and a delivery within the country of the eBay site it is listed on.
  • BrickLink: averages over sellers worldwide - no seller's country and no delivery.

Advertising · contains affiliate links

idee+spiel Sealed · gross · seen 11/3/2026
≈ 47.53 USD (42.52 EUR)
Go to shop
LEGO® Shop (FR) Sealed · gross · seen 10/9/2026 Out of stock at LEGO
≈ 50.42 USD (44.99 EUR)
Not in the shop's feed for over a week
BRICKMO Sealed · gross · seen 11/5/2026
≈ 50.65 USD (44.95 EUR)
Go to shop
Baustein Store Sealed · gross · seen 11/5/2026
≈ 61.96 USD (54.99 EUR)
Go to shop
Proshop Sealed · gross · seen 11/3/2026
≈ 63.60 USD (56.89 EUR)
Go to shop
LEGO® Shop (BR) Sealed · unknown tax basis · seen 10/6/2026 · excluded: quarantined
≈ 86.54 USD (429.99 BRL)
Not in the shop's feed for over a week
Amazon.com BrickDb shows no Amazon prices. The link opens a search for this set on Amazon's own site.
Advertising
See the price at Amazon

Links to shops in this table are affiliate links. If you buy through one, BrickDb may earn a commission; the price you pay does not change. Rows are sorted by price only, never by commission.

As an Amazon Associate, BrickDb (ThreeB IT GmbH) earns from qualifying purchases.

Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

Canada ≈ 42.13 USD (59.99 CAD) unknown tax basis Available 5/3/2025 to 7/31/2026.Recorded by BrickDb since 10/2/2026
Germany ≈ 50.50 USD (44.99 EUR) gross Available 5/3/2025 to 6/6/2026.Recorded by BrickDb since 10/2/2026
United Kingdom ≈ 52.79 USD (39.99 GBP) gross Available 5/3/2025 to 6/29/2026.Recorded by BrickDb since 10/2/2026
United States 49.99 USD net Available 5/3/2025 to 7/31/2026.Recorded by BrickDb since 10/2/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

137 inventory lines

Catalogue image of the part Sticker Sheet for Set 71842-1
Sticker Sheet for Set 71842-1 10113523· [No Color/Any Color]
×1
Catalogue image of the part Plate Special 1 x 2 with Clip Horizontal on Side
Plate Special 1 x 2 with Clip Horizontal on Side 11476· Black
×2
Catalogue image of the part Brick Curved 2 x 1 No Studs [1/2 Bow]
Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Dark Purple
×12
Catalogue image of the part Plate Round 4 x 4 with 2 x 2 Round Opening
Plate Round 4 x 4 with 2 x 2 Round Opening 11833· Black
×2
Catalogue image of the part Plate Special 1 x 2 with 5.9mm Centre Side Towball
Plate Special 1 x 2 with 5.9mm Centre Side Towball 14417· Dark Bluish Gray
×4
Catalogue image of the part Plate Special 1 x 2 5.9mm Centre Side Towball Socket
Plate Special 1 x 2 5.9mm Centre Side Towball Socket 14704· Light Bluish Gray
×8
Catalogue image of the part Tile Round 2 x 2 with Bottom Stud Holder
Tile Round 2 x 2 with Bottom Stud Holder 14769· Dark Purple
×2
Catalogue image of the part Brick Curved 2 x 2 x 2/3
Brick Curved 2 x 2 x 2/3 15068· Dark Purple
×7
Catalogue image of the part Brick Curved 2 x 2 x 2/3
Brick Curved 2 x 2 x 2/3 15068· Dark Blue
×11
Catalogue image of the part Plate Special 1 x 1 with Vertical Tooth
Plate Special 1 x 1 with Vertical Tooth 15070· Pearl Gold
×10
Catalogue image of the part Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version]
Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] 15672· Dark Purple
×4
Catalogue image of the part Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] 21459· Pearl Gold
×1
Catalogue image of the part Brick 1 x 2 x 3 with Bottom Stud Holder
Brick 1 x 2 x 3 with Bottom Stud Holder 22886· Light Bluish Gray
×1
Catalogue image of the part Plate Special 1 x 2 with End Towball
Plate Special 1 x 2 with End Towball 22890· Dark Bluish Gray
×2
Catalogue image of the part Bar Holder with Hole and Bar Handle
Bar Holder with Hole and Bar Handle 23443· Pearl Gold
×2
Catalogue image of the part Plate 2 x 2 Corner
Plate 2 x 2 Corner 2420· Dark Tan
×4
4 minifigures

Minifigures in this set

Catalogue image of the minifigure Lloyd, Bright Green Shoulder Armor and Mask, Hair

Lloyd, Bright Green Shoulder Armor and Mask, Hair

/ fig-016378 /
No retail priceNo recent sales
Catalogue image of the minifigure Sora, Dark Blue Shoulder Armor and Mask

Sora, Dark Blue Shoulder Armor and Mask

/ fig-016376 /
No retail priceNo recent sales
Catalogue image of the minifigure Wyldfyre, Dark Red Outfit

Wyldfyre, Dark Red Outfit

/ fig-015838 /
No retail priceNo recent sales
Catalogue image of the minifigure Zarkt

Zarkt

/ fig-016114 /
No retail priceNo recent sales
Same theme, piece count within 15 %

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