The cheapest I have found it most place are £13+
Turbo: Super Stunt Squad Product Details Turbo: Super Stunt Squad is a high-velocity action racing game featuring the super-charged crew from the film Turbo. Each character has their own signature style and tricked-out skills such as jumps, drifts, grinds, flips and other super-cool stunt moves. Expert skills will come in handy to earn power-ups, customise your character, discover shortcuts, and win the race in the larger-than-life environments of Turbo!
Play as your favourite snails from the movie – Speed, jump, drift, grind, and flip with your favorite characters including Turbo, Whiplash, Smoove Move, Skidmark, and Burn.
Perform awesome stunts! – Use the environment to perform one-of-a-kind Turborized stunts!
Unique levels based off locations from the film – Explore locations like the Dos Bros Taco Stand and Starlight Plaza, all from a snail’s point of view!
Multiple objectives and missions – Each level offers multiple missions and objectives!
Tons of Customisation and Unlocks – Design, upgrade, and unlock highly customisable shells!
Team up in Multiplayer – Play with a friend for some co-op action