i was looking to buy a used g5 for video editing and as much as i want a mac pro, i just don't have the money. so i'm looking to get a g5 but i want to know what value is a g5 dual 2.0 3.5GB ram 300GB+160 used (is it worth $649). and please avoid replying with "if it's too good to be true, than it is" because i'm really new to buying used and never paid attn to g5 values.