Rontu the Master Dragon (71842-1)

LEGO set 71842-1 Rontu the Master Dragon - Image 1

Price Comparison

No retailers currently stock Rontu the Master Dragon in The United States.

Set details

Name: Rontu the Master Dragon
Set number: 71842-1
Year: 2025
Theme: Ninjago
Number of parts: 381
Number of part types: 120
Age rating: 7+
Retail price: $49.99
Retirement date: 31-07-2026

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.

Price History

Track how the lowest available price for set 71842-1 in The United States has changed over time.

Parts

Browse all 381 parts in set 71842-1 with individual pricing from BrickLink or Brick Owl.

Price source:

Value of parts: $41.49
Pricing information known of 118/120 parts.

	Color	Quantity	Average price	Total	Value
Creature Body Part, Dragon, Wing Large	Dark Pink	2	$1.15	$2.30	2 x $1.15 $2.30
Energy Effect, Flame, Squiggly	Trans-Dark Pink	2	$1.08	$2.17	2 x $1.08 $2.17
Bracket 1 x 2 - 1 x 2	Dark Blue	7	$0.25	$1.76	7 x $0.25 $1.76
Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole, No Arm Holes	Black	5	$0.29	$1.45	5 x $0.29 $1.45
Bracket 1 x 1 - 1 x 2	Dark Bluish Gray	4	$0.36	$1.43	4 x $0.36 $1.43
Creature Body Part, Dragon Head Upper Jaw with Bright Light Yellow Eye, Dark Pink/Blue Markings print	Dark Blue	1	$1.32	$1.32	1 x $1.32 $1.32
Brick 1 x 12	Dark Purple	2	$0.63	$1.27	2 x $0.63 $1.27
Bracket 1 x 1 - 1 x 2 Inverted	Black	6	$0.21	$1.27	6 x $0.21 $1.27
Animal / Creature Body Part, Claw with Clip	Pearl Gold	12	$0.11	$1.27	12 x $0.11 $1.27
Plate 1 x 2	Pearl Gold	4	$0.28	$1.11	4 x $0.28 $1.11
Bracket 1 x 2 - 1 x 2 Inverted	Dark Tan	16	$0.05	$0.85	16 x $0.05 $0.85
Brick Special 2 x 5 with Slope, Studs on Side	Dark Blue	2	$0.41	$0.82	2 x $0.41 $0.82
Tile 2 x 2 Curved, Macaroni	Dark Purple	12	$0.07	$0.79	12 x $0.07 $0.79
Brick Curved 2 x 2 x 2/3	Dark Blue	11	$0.07	$0.73	11 x $0.07 $0.73
Plate 1 x 2	Dark Pink	17	$0.04	$0.67	17 x $0.04 $0.67
Brick Curved 2 x 1 No Studs [1/2 Bow]	Dark Purple	12	$0.05	$0.63	12 x $0.05 $0.63
Technic Axle Pin 3L without Friction Ridges and 2L Axle	Light Bluish Gray	2	$0.32	$0.63	2 x $0.32 $0.63
Brick Curved Inverted 2 x 2 x 2/3	Dark Bluish Gray	3	$0.21	$0.63	3 x $0.21 $0.63
Brick Wedged, Curved Inverted 6 x 4	Dark Purple	1	$0.58	$0.58	1 x $0.58 $0.58
Brick Curved 2 x 2 x 2/3	Dark Purple	7	$0.08	$0.56	7 x $0.08 $0.56
Plate Special 1 x 1 with Vertical Tooth	Pearl Gold	10	$0.05	$0.53	10 x $0.05 $0.53
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small	Dark Pink	3	$0.17	$0.52	3 x $0.17 $0.52
Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]	Pearl Gold	2	$0.25	$0.50	2 x $0.25 $0.50
Tile 1 x 1 with Groove	Dark Purple	6	$0.08	$0.48	6 x $0.08 $0.48
Chain 6L [5 Links]	Black	2	$0.24	$0.48	2 x $0.24 $0.48
Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version]	Dark Purple	4	$0.12	$0.48	4 x $0.12 $0.48
Hinge Plate 1 x 2 Locking with 1 Finger On Top	Light Bluish Gray	4	$0.11	$0.42	4 x $0.11 $0.42
Brick 1 x 4	Dark Blue	2	$0.21	$0.42	2 x $0.21 $0.42
Minifig Head [Plain] [Vented Stud - 2 Holes]	Trans-Light Blue	2	$0.21	$0.42	2 x $0.21 $0.42
Plate 2 x 2	Dark Purple	6	$0.07	$0.40	6 x $0.07 $0.40
Wedge Plate 2 x 2 Cut Corner	Dark Blue	6	$0.07	$0.40	6 x $0.07 $0.40
Plate Special 1 x 2 with Angled Handles on Side	Pearl Gold	4	$0.09	$0.37	4 x $0.09 $0.37
Bracket 1 x 2 - 2 x 2 Inverted	Dark Bluish Gray	4	$0.09	$0.37	4 x $0.09 $0.37
Brick 1 x 3	Black	2	$0.19	$0.37	2 x $0.19 $0.37
Technic Ball Joint with Through Axle Hole	Black	2	$0.17	$0.34	2 x $0.17 $0.34
Plate 4 x 4 Corner	Dark Blue	2	$0.17	$0.34	2 x $0.17 $0.34
Plate Round 1 x 1 with Open Stud	Dark Bluish Gray	4	$0.08	$0.32	4 x $0.08 $0.32
Plate 2 x 4	Dark Purple	4	$0.08	$0.32	4 x $0.08 $0.32
Plate Special 1 x 2 5.9mm Centre Side Towball Socket	Light Bluish Gray	8	$0.04	$0.32	8 x $0.04 $0.32
Technic Beam 1 x 2 Thin	Dark Bluish Gray	4	$0.08	$0.32	4 x $0.08 $0.32
Weapon Chakram / Hoop Blade / Ring	Pearl Gold	2	$0.16	$0.32	2 x $0.16 $0.32
Equipment Lantern	Pearl Titanium	1	$0.28	$0.28	1 x $0.28 $0.28
Plate Round 4 x 4 with 2 x 2 Round Opening	Black	2	$0.13	$0.26	2 x $0.13 $0.26
Bracket 1 x 1 - 1 x 1	Dark Blue	2	$0.13	$0.26	2 x $0.13 $0.26
Tile 2 x 2 with Groove	Dark Tan	4	$0.07	$0.26	4 x $0.07 $0.26
Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth	Dark Bluish Gray	4	$0.07	$0.26	4 x $0.07 $0.26
Tile Round 1 x 1	Dark Tan	4	$0.07	$0.26	4 x $0.07 $0.26
Technic Brick 1 x 4 [3 Pin Holes]	Dark Bluish Gray	2	$0.12	$0.24	2 x $0.12 $0.24
Animal Body Part / Plant, Tail / Trunk / Tentacle / Tongue / Vine / Tree Branch (Long Tip)	Dark Pink	2	$0.12	$0.24	2 x $0.12 $0.24
Brick 1 x 1	Black	2	$0.11	$0.21	2 x $0.11 $0.21
Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]	Black	2	$0.11	$0.21	2 x $0.11 $0.21
Plate 2 x 2	Dark Bluish Gray	4	$0.05	$0.21	4 x $0.05 $0.21
Plate 2 x 12	Black	1	$0.21	$0.21	1 x $0.21 $0.21
Launcher, Plate Special 1 x 2 with Mini Blaster Square	Pearl Gold	2	$0.11	$0.21	2 x $0.11 $0.21
Tile Round 1 x 1 Quarter	Dark Blue	5	$0.04	$0.20	5 x $0.04 $0.20
Plate Special 1 x 1 with Tooth	Light Bluish Gray	1	$0.20	$0.20	1 x $0.20 $0.20
Technic Brick Special 2 x 2 with Ball and Axle Hole, with 6 Holes in Ball	Dark Bluish Gray	3	$0.07	$0.20	3 x $0.07 $0.20
Technic Axle 8	Black	1	$0.19	$0.19	1 x $0.19 $0.19
Brick Wedged, Curved 4 x 3 No Studs [Plain]	Dark Purple	1	$0.19	$0.19	1 x $0.19 $0.19
Brick Special 1 x 1 with Headlight	Blue	2	$0.09	$0.19	2 x $0.09 $0.19
Plate Angled 2 x 2 with Step and Hole in Center	Dark Bluish Gray	2	$0.09	$0.19	2 x $0.09 $0.19
Plate Special 2 x 2 with Only 2 studs	Dark Blue	2	$0.09	$0.19	2 x $0.09 $0.19
Plate 2 x 4	Dark Bluish Gray	2	$0.09	$0.19	2 x $0.09 $0.19
Brick Special 1 x 1 with Studs on 2 Sides	Dark Bluish Gray	1	$0.19	$0.19	1 x $0.19 $0.19
Weapon Hilt Symmetric	Sand Green	1	$0.17	$0.17	1 x $0.17 $0.17
Technic Brick 1 x 2 [1 Pin Hole]	Black	2	$0.08	$0.16	2 x $0.08 $0.16
Plate 2 x 2 Corner	Dark Tan	4	$0.04	$0.16	4 x $0.04 $0.16
Brick Curved 3 x 1 No Studs	Dark Purple	2	$0.08	$0.16	2 x $0.08 $0.16
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	White	4	$0.04	$0.16	4 x $0.04 $0.16
Brick 1 x 1	Dark Blue	2	$0.08	$0.16	2 x $0.08 $0.16
Brick Sloped 30° 1 x 2 x 2/3	Dark Purple	4	$0.04	$0.16	4 x $0.04 $0.16
Plate Special 1 x 2 with End Towball	Dark Bluish Gray	2	$0.08	$0.16	2 x $0.08 $0.16
Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top]	Black	4	$0.04	$0.16	4 x $0.04 $0.16
Plate Special 1 x 2 with 5.9mm Centre Side Towball	Dark Bluish Gray	4	$0.04	$0.16	4 x $0.04 $0.16
Plate 1 x 4	Dark Bluish Gray	2	$0.08	$0.16	2 x $0.08 $0.16
Wave / Power Blast Rounded Energy with Bar Handle	Trans-Orange	2	$0.08	$0.16	2 x $0.08 $0.16
Tile Special 2 x 2 Corner with Cut Corner - Facet	Dark Blue	2	$0.08	$0.16	2 x $0.08 $0.16
Weapon Sword / Saber with Curved Blade and Hilt	Pearl Gold	1	$0.16	$0.16	1 x $0.16 $0.16
Tile Round 1 x 1	Dark Pink	5	$0.03	$0.13	5 x $0.03 $0.13
Brick 1 x 2 x 3 with Bottom Stud Holder	Light Bluish Gray	1	$0.13	$0.13	1 x $0.13 $0.13
Tile Round 2 x 2 with Bottom Stud Holder	Dark Purple	2	$0.07	$0.13	2 x $0.07 $0.13
Bar Holder with Hole and Bar Handle	Pearl Gold	2	$0.07	$0.13	2 x $0.07 $0.13
Plate 4 x 4 Corner	Dark Bluish Gray	2	$0.07	$0.13	2 x $0.07 $0.13
Technic Disc 3 x 3	Black	2	$0.07	$0.13	2 x $0.07 $0.13
Tile Round 1 x 1 Quarter	Dark Bluish Gray	3	$0.04	$0.12	3 x $0.04 $0.12
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)	Dark Blue	3	$0.04	$0.12	3 x $0.04 $0.12
Tassel with 1 x 1 Round Stud	Pearl Gold	1	$0.12	$0.12	1 x $0.12 $0.12
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]	Pearl Gold	1	$0.12	$0.12	1 x $0.12 $0.12
Technic Pin with Friction Ridges Lengthwise with No Center Slots	Black	4	$0.03	$0.11	4 x $0.03 $0.11
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small	Black	4	$0.03	$0.11	4 x $0.03 $0.11
Dish 2 x 2 Inverted [Radar]	Black	2	$0.05	$0.11	2 x $0.05 $0.11
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)	Dark Bluish Gray	2	$0.05	$0.11	2 x $0.05 $0.11
Plate 1 x 4	Dark Blue	2	$0.05	$0.11	2 x $0.05 $0.11
Wedge Plate 2 x 4	Dark Blue	2	$0.05	$0.11	2 x $0.05 $0.11
Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]	Dark Blue	2	$0.05	$0.11	2 x $0.05 $0.11
Plate 2 x 3	Dark Blue	2	$0.05	$0.11	2 x $0.05 $0.11
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]	Black	1	$0.09	$0.09	1 x $0.09 $0.09
Plate Round 1 x 1 with Open Stud	Pearl Gold	3	$0.03	$0.08	3 x $0.03 $0.08
Plate Round 1 x 1 with Solid Stud	Dark Purple	3	$0.03	$0.08	3 x $0.03 $0.08
Launcher Trigger, Weapon Gun Trigger	Dark Bluish Gray	3	$0.03	$0.08	3 x $0.03 $0.08
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)	Black	3	$0.03	$0.08	3 x $0.03 $0.08
Technic Axle 4	Red	2	$0.04	$0.08	2 x $0.04 $0.08
Plate 2 x 3	Black	1	$0.08	$0.08	1 x $0.08 $0.08
Plate Special 1 x 2 with Clip Horizontal on Side	Black	2	$0.04	$0.08	2 x $0.04 $0.08
Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole	Black	2	$0.04	$0.08	2 x $0.04 $0.08
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]	Dark Purple	2	$0.04	$0.08	2 x $0.04 $0.08
Plate Round 1 x 1 with Solid Stud	Black	2	$0.04	$0.08	2 x $0.04 $0.08
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin	White	2	$0.04	$0.08	2 x $0.04 $0.08
Plate Special 1 x 2 with Clip Horizontal on End	Black	2	$0.04	$0.08	2 x $0.04 $0.08
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]	Red	2	$0.03	$0.05	2 x $0.03 $0.05
Plate Round 4 x 4 with Pin Hole	Dark Bluish Gray	1	$0.05	$0.05	1 x $0.05 $0.05
Bracket 5 x 2 x 1 1/3 with Bottom Stud Holder	Black	1	$0.05	$0.05	1 x $0.05 $0.05
Brick Round 1 x 1 Open Stud	Trans-Light Blue	1	$0.05	$0.05	1 x $0.05 $0.05
Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate	Light Bluish Gray	1	$0.04	$0.04	1 x $0.04 $0.04
Plate Special 1 x 2 Side Handle [Free Ends]	Black	1	$0.04	$0.04	1 x $0.04 $0.04
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End	White	1	$0.04	$0.04	1 x $0.04 $0.04
Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]	Dark Bluish Gray	1	$0.04	$0.04	1 x $0.04 $0.04
Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed	Dark Bluish Gray	1	$0.03	$0.03	1 x $0.03 $0.03

Missing pricing information on the following items.

Part		Color	Quantity
	Sticker Sheet for Set 71842-1	[No Color/Any Color]	1
	Weapon Sword, Broad with Trans-Red Blade pattern	Pearl Gold	1

Minifigures included in set 71842-1.

Price source:

Minifigure		Quantity	Value
	Lloyd, Bright Green Shoulder Armor and Mask, Hair fig-016378, njo0974, BOID 1062581	1	$14.23
	Sora, Dark Blue Shoulder Armor and Mask fig-016376, njo0975, BOID 852553	1	$8.58
	Wyldfyre, Dark Red Outfit fig-015838, njo0923, BOID 1300004	1	$2.83
	Zarkt fig-016114, njo0948, BOID 277091	1	$11.95
Total minifigure value:			$37.59

Compare the value of buying Rontu the Master Dragon as a complete set versus the total value of all parts individually.

Value Breakdown
Parts value	$41.49
Minifigure value	$37.59
Total inventory value	$79.08

BrickLink

Ratio: what the parts sell for, over what the set sells for. Above 1× the parts are worth more than the set.

New · 6 months 1.63×

Set $42.51 · parts $69.30· 14 sold

Used · 6 months ?

Set ? · parts $32.06

Brick Owl

New · Current 3.13×

Set $49.94 · parts $156.55

New · 6 months 1.63×

Set $44.15 · parts $71.78

New · 1 year 1.92×

Set $44.15 · parts $84.57

Used · Current ?

Set ? · parts $90.68

Items sold, 6 months, new, both marketplaces 17

BrickLink
Condition	Timespan	Avg price	Items sold	Inventory value	Ratio
New	6 months	$42.51	14	$69.30	1.63
Used	6 months	?	?	$32.06	?

Brick Owl
Condition	Timespan	Avg price	Inventory value	Ratio
New	Current	$49.94	$156.55	3.13
	6 months	$44.15	$71.78	1.63
	1 year	$44.15	$84.57	1.92
Used	Current	?	$90.68	?

Combined 6 Month Sales Volume (New)
Total items sold	17

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.

LEGO® NINJAGO® dragon toy for kids – Rontu the Master Dragon toy lets boys and girls aged 7 and up recreate scenes from season 3 of the NINJAGO Dragons Rising TV show
Highly posable dragon figure – This large dragon model features a posable tail, legs, wings, head and jaw, 2 positions on its back for a minifigure, plus a stud shooter under each wing
Mini shrine – Battle role-play set features a small brick-built shrine guarded by Zarkt, which contains a secret message that Lloyd can decode with his translucent reveal blade accessory
4 NINJAGO® minifigures – This LEGO® building set comes with ninja warriors Sora, Wyldfyre, Lloyd and the villainous Zarkt with ninja weapon accessories for kids to play out good vs. evil battles
Birthday gift idea for kids – This LEGO® set provides a fun build-and-play experience and is a birthday gift idea for boys and girls aged 7 and up who have a passion for ninja action
A fun way to build – The LEGO® Builder app guides kids on an intuitive building adventure, where they can save sets, track progress and zoom in and rotate models in 3D while they build
A universe of LEGO® NINJAGO® sets – The extensive collection of ninja toy playsets (sold separately) lets kids escape into a fantasy world for imaginative play with their ninja heroes
Measurements – The Rontu the Master Dragon figure in this 381-piece LEGO® NINJAGO® building kit stands over 5 in. (13 cm) tall

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BrickLink history of 0 sales with 0 total item quantity. Item condition: New.

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