I've recently been given 3 G5's (1 Mac Pro dual 2.0 8GB RAM, 1 Dual Dual core G5 4GB RAM, and 1 iMac 2.0 2GB RAM). All three are operational, but require new hard drives, so about $80 worth of hardware to make them fully functional. I'm reluctant to put the money into them if there isn't the chance that I would be able to recoup the repair costs. These are very functional machines and I hate to think that the only thing I can do is send them off for recycling. Any advice on what to do?