Play are selling "Barbie Island Princess" for the Nintendo Wii for £17.99.
The attached 5% voucher makes it £17.09.
You can get cashback through the usual sites (e.g. 4% Quidco, making it just £16.37)
Next best price seems to be £20.99 from Gamestation.
Barbie as The Island Princess follows the storyline of the popular DVD launch in a fun party-style format. You'll play as Rosella, the shipwrecked princess, who is raised by a family of animal friends and rescued by the adventurous Prince Antonio from her tropical island. Through a series of minigames coined by music and characters from the movie, you will venture from Rosella's island home to the Prince's coastal castle in a fun filled adventure
- Interact with seven of your favorite characters from the movie
- Experience five beautifully re-created locations from the movie
- 2 modes of gameplay - Single and Multiplayer in co-op and competitive play
- Easy "pick-up and play" gameplay designed for players of any skill level
- Stunning sets, costumes and music from the movie
- Unlockable content including special characters, dresses, additional movie footage and more!
- 28 exciting minigames featuring music, singing, dancing and more!
- Collect flowers by maneuvering a bamboo platform
- Design dresses and decorate them with jewels
- Star-gaze with Prince Antonio from the deck of the royal ship
- Invite Roselaa and Tallulah's families to a garden tea party
- Impress the Royal Court with perfectly timed dance moves
- Swing on vines from tree to tree to collect fruit
- Learn to speak to the animals by tracing objects found on the island
- Collect items from the sea in woven baskets, avoiding the fish and crabs
- Many more exciting games based on scenesfrom the movie!