EA Sports Active: Personal Trainer (Wii) - £24.99 @ Amazon

Seems like the cheapest price at the moment

Product Features

* Active Fitness Made Fun & Easy Workouts feature variety and familiar activities that target upper body, lower body as well as cardio. Start off with a run, followed by bicep curls and get your heart beating with some cardio boxing. Get fit and have fun in minutes a day!
* Benefit of a Trainer in a BoxYour trainer will be the focal point of the experience guiding you towards your own version of personal achievement. Feedback will be given throughout your workout, keeping you on track to reach your fitness goals
* 30 Day ChallengeThe game will track your progress as you embark on a 30 Day Challenge and tailor workouts to your level of fitness. Circuits will change as you progress each day, and EA SPORTS Active will track calories, intensity and progress throughout your journey
* New Way to Play Slip the Nunchuk into the specially designed leg strap and hold the Wii Remote in your hand to track your movements from both your upper and lower body. A resistance band is also included to increase the intensity of exercises such as bicep curls and shoulder presses
* Workout Your Way Circuits can be customized to your interest and fitness level. Choose your duration, intensity level & set your own goals for calories burned and workout score
* Wii Balance Board CompatibilityGet more out of your EA SPORTS Active workout using a Wii Balance Board with added functionality and physical benefits for many exercises.