£29.99 in stock at Play.com
This is the cheapest I've seen. Its mostly on sale around the £38 mark (unless you want 2 copies and go for the 2 games for £60 instore at PC World - or go to play.asia)
Don't forget 2% cashback with Quidco....
More details about the game below.
Star Trek: Legacy places you in the role of the Admiral of a task force of warships, which you control in small and large-scale battles. Test your strategic and tactical skills in real-time combat featuring over 60 authentic spaceships, full damage modeling, and spectacular visual effects. Play through the single-player campaign or in the extensive multiplayer mode with a group of friends online.
The compelling storyline in Legacy spans the entire Star Trek Universe, including the Original Series, Star Trek : The Next Generation, Star Trek : Deep Space Nine, Star Trek : Voyager, and Star Trek : Enterprise eras.