I went into Gamestation an hour agoish and they had a logitech usb mic pre-owned for £2.99..
I thought it seemed like a very good deal if it worked with GH.
So I guessed it worked with guitar hero... (it looks the same and i'm sure i've heard something about logitech making the mics for everything except singstar...)
Anyways, got home and it works fine with GH:WT....
How much is the official mic for gutiar hero normally....
(well techincally the mic I'm using is just as official - just it doesn't say GH on it lol..)