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Mermaid Roller Coaster Ride (42703)

Name: Mermaid Roller Coaster Ride
Brand: LEGO
SKU: 42703
Rating: 5 (5 reviews)

Prices last checked: 13 May 2026 at 06:01

LEGO.com RRP:

£89.99

LEGO.com

★5.0

(5 reviews)

🧱 864 pieces - : £0.10

Available From

Best Deal

£90.00

Price checked: 13 May 2026

View Deal →

LEGO.comOfficial

£89.99

Price updated: 21 Jun 2026

View on LEGO →

Building Instructions Brickset

Price Analysis

Lowest Price Ever

£89.99

at LEGO.com · May 2026

Average Price (12mo)

£89.99

Current vs Average

0.0%

Near average

Price Trend

Stable

Last 30 days

Value Score

9.0/10

Price-per-piece vs theme avg

The lowest price we've recorded for Mermaid Roller Coaster Ride is £89.99 at LEGO.com in May 2026. The current price is close to the 12-month average of £89.99.

Price History & Buying Verdict

VerdictGood time to buy

•The current best price of £90.00 is within 5% of the all-time low we've recorded (£89.99 at LEGO.com, May 2026).
•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've been tracking the price of LEGO Friends Mermaid Roller Coaster Ride (864 pieces) for 49 days, recording 9 data points across LEGO.com and major UK retailers. Over that period the price has dropped 0 times below previous levels, with the lowest price ever recorded being £89.99 at LEGO.com in May 2026.

The 12-month average sale price for set 42703 works out to £89.99 — that's 0% above the LEGO RRP of £89.99. The highest price we recorded across our tracked retailers was £90.00, giving a range of about £0.01 between the cheapest and most expensive observation.

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. Prices have been stable over the last 30 days. 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.

What is the lowest price ever recorded for LEGO Mermaid Roller Coaster Ride?

The lowest price we've recorded for LEGO Mermaid Roller Coaster Ride (Set #42703) is £89.99 at LEGO.com in May 2026. That's 0% off the LEGO RRP of £89.99. Track the latest movements on our LEGO price history page.

Is LEGO Mermaid Roller Coaster Ride good value for money?

Comparing piece-count to price across the LEGO Friends theme, this set scores 9.0 / 10 for value. That works out to about 10.4p per piece. That puts Mermaid Roller Coaster Ride in the top tier of Friends sets for raw build value — you're paying noticeably less per brick than the theme average. Compare against other contenders on our best-value LEGO sets page.