Awright Topaz, I see that no ones replied yet, 'cos they're probably all like me, without much knowledge of this at all.
I dinna know of anywhere where you can but this cheaper, so the mosy helpful thing I can do is suggest this bit of software what they use at my work. I think it's called JAWS or something, and it apprently replaces much of the functions of the keyboard. From memory, I think you speak into a microphone and the software converts it into keystrokes.
Sorry man, it's the best I can do.