Friends

Mermaid Roller Coaster Ride

42703
864 pieces
Retiring Next year
BUYING ADVICE
⚠️Wait for a better deal
17% OFF
17% off is below the typical discount for this type of set. Deeper sales are likely. It has been as low as £62.99 (30% off), so the current deal is good but not the best we've seen. Price just dropped from £89.98.

retail price

£89.99

 

best price

£74.99

-£15.00

Lowest ever: £62.99 at Very (13 Oct 2026)

This set is 17% off - watch it to get notified of even bigger drops

About LEGO Mermaid Roller Coaster Ride

Friends fans can dive into aquatic adventure with this mermaid-themed amusement park attraction. The 864-piece set builds a functional roller coaster with working mechanisms that allow the included minidolls to ride through the mermaid-inspired track layout.

The set includes 5 minidolls: Autumn with interchangeable face expressions to show excitement, Leo, Liann, and 2 shimmering mermaid figures. Autumn's changeable facial features add an interactive storytelling element as characters experience the thrills of the ride.

Play Features and Accessories

The roller coaster features working mechanisms that create a genuine ride experience for the minidolls. Themed accessories enhance the amusement park setting, including bubble tea, a photo strip, sea animals, and a narwhal plushie made from LEGO elements. These accessories support imaginative play scenarios around a day at the theme park.

The completed roller coaster measures 52 cm wide, 28 cm deep, and 19 cm high, making it a substantial display piece. The set is designed for builders aged 8 and up, offering both construction challenge and ongoing play value through the functional ride mechanism and character-driven storytelling opportunities.

Where to Buy LEGO Mermaid Roller Coaster Ride for the Best Price

We've been tracking prices for this set since May 2026. The recommended retail price is £89.99. It's currently available from 9 retailers, with Amazon offering the best price at £74.99, which is 17% below RRP. The lowest price we've ever recorded was £62.99 at Very in October 2026, 30% off RRP. Over its tracked history, prices have ranged from £62.99 to £109.99. This set is expected to retire next year, so prices may increase as availability decreases.

Set Details

Set Number
42703
Pieces
864
Theme
Friends
RRP
£89.99
Best Price
£74.99
Price per Piece
0.09p
Browse all Friends sets →

Price History

Weekly view

Additional Images

Price History

Amazon
01/11/2026
£74.99
Argos
31/10/2026
£90.00
Very
30/10/2026
£74.99
LEGO
21/10/2026
£89.99
Selfridges
20/10/2026
£90.00
Smyths Toys
12/09/2026
£83.99
The Entertainer
09/09/2026
£75.00
ASDA
28/07/2026
£89.98
Costco
29/05/2026
£79.99