it dosn't look good for the 3,000$ x1000 verses a 100$ ebay g5 power mac.... That is quite a huge difference in price as far as performance.
Why people insists of compare prices of new hardware versus used hardware? it's crazy and stupid. it's like compare the price of a old 250 hp car that is cheap versus a new 100 hp new car, sure the later is a bit less powerful and it's more expensive but it is NEW and have NEWER and EFFICIENT technology