$9.95 isn't as good as free though.
What are you running Warhead on. What res, settings and on what gfx card?
I'm thinking of getting it since my 8800GTX played the original Crysis with everything max (except AA and DX10).
the system requirements for Warhead are very moderate and lower by far than Crysis. They have really tweaked their Crytek engine.
I play @ 1900X1200 on my 24" Samsung with everything maxxed, except the post-processing such as AA and such. I can live with a very very rare case "stairs" on a diagonal line..lol.
To drive it I have my old AMD64 X2 4800 "Toledo" core, 2GB and my trusty BFG 7900GTX (512Mb) card. It's getting a bit long in the tooth, but it works great for photography and the games that are not pushing the frontline of graphical performance.