I went to Comet yesterday to collect what I thought was a pretty good deal;
Wireless Controller (White) plus Forza 2 game for £19.99 (collection only).
I reserved this online,and headed off to the store. When I got there I asked the SA if there were anymore (I wanted two ideally) and she said she would have a look for me on their system.
She came back with this;
Product Code: 366137
Description: Msft Xbox 360 PGR3 AL UNL + Controller
The controller comes along with Project Gotham 3 and Arcade Live Unplugged.
Although both of these gamesare now fairly old,and have limited resale or exchange value, you should have no problem getting your £10 back through resale or you could just exchange the games. CEX will give you £6 for the set in exchange (or £5 cash) making this a steal for a wireless controller.
Call the stores for these as by the look of the codes they are old stock and are dependant on the store still having them,although they should appear on their computers.
If these aren't available, you can still get the £19.99 deal, and do the same with Forza 2 (£6 exchange, £5 cash) - although it is a pretty good game if you don't already own it!
Good luck on this one Gaming Money Savers, I hope someone else can find this deal.
The £19.99 deal is still available in the Hemel Hempstead and Tottenham Hale stores if anyone is near those, I've added the link to it on Comet's website...