You could get a decent G3 for that price, im hate PC's, at least its okay thanks to Linus and Stallman. It is still a peice of shit, but it appears to be half good with Linux instead of the usual peice of shit it is when i was using Windows.
AVOID NON-FREE (as in freedom) SOFTWARE AT ALL COSTS. IT IS ANTI-SOCIAL. FUCK MICROSOFT, SUN, APPLE, AND ALL THE OTHERS.
THE PENGUIN WILL KILL YOU ALL!