NewAges 8+

Mermaid Roller Coaster Ride (42703)

Name: Mermaid Roller Coaster Ride
Brand: LEGO
SKU: 42703

Prices last checked: 8 May 2026 at 18:01

LEGO.com RRP:

£89.99

🧱 864 pieces - : £0.10

Available From

Best Deal

£90.00

Price checked: 8 May 2026

View Deal →

LEGO.comOfficial

£89.99

Price updated: 3 May 2026

View on LEGO →

Building Instructions Brickset

Price Analysis

Not enough price data yet for a detailed analysis. We're tracking this set and will have insights available soon.

Price History & Buying Verdict

VerdictNo strong signal yet

•On price-per-piece, this is one of the better-value sets in the Friends range (value score 9.0/10 vs theme average).

We're still building up the price history for LEGO Mermaid Roller Coaster Ride (42703). Once we have a few weeks of data across LEGO.com and our tracked retailers, we'll show you the lowest recorded price, monthly averages, and a buy/wait recommendation here.

Want to see how LEGO Mermaid Roller Coaster Ride (set 42703) compares against other sets? Browse the best-value LEGO sets or check the full price-history tracker.

Description

Mermaid Roller Coaster Ride (42703) is a LEGO Friends set with 864 pieces, with an RRP of £89.99. It's currently available from £90.00 at argos_uk. With a value score of 9.0/10, this set offers excellent value compared to other Friends sets.

SpecificationsMake playtime extra thrilling with the LEGO® Friends Mermaid Roller Coaster Ride (42703) building set for kids ages 8 and up. This fun gift idea for girls and boys lets young builders create a working roller coaster and send it zooming around a rotating pool where beautiful mermaids swirl and perform. This exciting, functional playset comes with lots of accessories and 5 minidolls, including Autumn, whose face can be swapped to show relaxation or excitement, and 2 mermaids, Serina and Azuria, who both have opalescent hair. Amusement park lovers can find endless ways to enjoy this roller coaster building set with themed details at every turn, including a ticket entrance, park map, photos and lots more. Kids can enjoy intuitive building with the LEGO Builder app, zooming and rotating with 3D instructions, while saving and tracking progress – all from the app. Set contains 864 pieces.

Features

ROLLER COASTER BUILDING SET – Let the good times roll with this LEGO® Friends Mermaid Roller Coaster Ride (42703), which includes 5 minidolls and lots of themed accessories
FUNCTIONAL AMUSEMENT PARK RIDE – Kids can have lots of fun role-playinga thrilling day out, taking the minidolls for a ride on the working mermaid-inspired roller coaster toy
5 CHARACTERS – Change up the Autumn minidoll’s face to reflect her excitement as she explores the park with Leo and Liann; discover 2 shimmering mermaid toys for endless fun
CREATIVE ACCESSORIES – Inspire storytelling and imaginative play with themed accessories, including bubble tea, a photo strip, sea animals, a LEGO® piece narwhal toy plushie and more
GIFT IDEA – This mermaid toy for girls and boys makes a great holiday or birthday gift for kids ages 8 years old and up who love pretend play and roller coasters
MAKE MORE FRIENDS – Discover more fun with other sets (sold separately) and the LEGO® Friends: The Next Chapter online show, where kids get to know the characters of Heartlake City
A HELPING HAND – Follow digital instructions in the LEGO® Builder app, where kids can zoom in and rotate models using 3D instructions, track their progress and save sets as they develop newskills
DIMENSIONS – The roller coaster in this 864-piece set measures over 7.5 in. (19 cm) high, 20.5 in. (52 cm) wide and 11 in. (28 cm) deep

Frequently Asked Questions about Mermaid Roller Coaster Ride

What is the best price for LEGO Mermaid Roller Coaster Ride (Set 42703)?

LEGO Mermaid Roller Coaster Ride (Set #42703) is currently priced at £89.99 on LEGO.com. We continuously monitor prices across multiple UK retailers to find you the best deals.

How many pieces are in LEGO set 42703?

LEGO Mermaid Roller Coaster Ride (Set #42703) contains 864 pieces. At the best available price of £90.00, that works out to approximately 10.4p per piece.

What age is LEGO Mermaid Roller Coaster Ride suitable for?

LEGO Mermaid Roller Coaster Ride (Set #42703) is recommended for ages 8+. This set is part of the LEGO Friends theme. View all Friends sets and deals.

Where can I find the building instructions for LEGO Mermaid Roller Coaster Ride?

You can download the official building instructions for LEGO Mermaid Roller Coaster Ride (Set #42703) for free from LEGO.com. Download the building instructions here. The instructions are available as a PDF and can be viewed on any device.

Where can I buy LEGO Mermaid Roller Coaster Ride in the UK?

LEGO Mermaid Roller Coaster Ride (Set #42703) is available from 1 UK retailer including argos_uk. Prices range from £90.00. It's also available directly from LEGO.com at £89.99.