Just picked this up for £2.00 at Asda in Peterborough and there was still a couple left. Possibly store specific and may not be for everyone as it's 4 free months subscription and you have to pay monthly (about £8 I think) to continue playing after that. Worth a punt at £2.00 I reckon.
The next cheapest I could find on-line that was in stock was Amazon at £14.99. Here is all the guff:
Includes 4 months subscription!
Football Manager Live is the new football management sim from the kings of the genre and creators of the best selling Football ManagerTM series, Sports Interactive.
Create your own football club from a vast database of real professional players and manage them in your own style then pit yourself against other managers online to come out on top. Football Manager Live also uses a unique combination of elements from social networking, auction sites and user generated content so that you can build and manage your own truly customised football team and lead them to victory against players from across the globe.