XFPS Keyboard And Mouse On PS3

XFPS has just released an adapter that allows one to plug in a USB or PS/2 mouse and keyboard, mapping it to the appropriate commands on your PS3 controller. I suppose this would definitely snag you an edge over those using the standard controller when engaged in an FPS title. Would you fork out $99 for this? I might be a bit reserved forking out that amount, considering there are only a small amount of games which allow you to use something more than the standard controller to play.