Where is the cheapest place to buy some kind of video game projector?

Whenever I play 2+ player on the xbox 360 (and it’s the same for other consoles) I always find that there just isn’t enough room on the screen for each player. I have a 32″ HD tv but it just seems small. I don’t really mind about the quality, I just want to know a where I could get a cheap projector.

Also I am in the UK so don’t show me: america only etc.