AMD 2800 Nvidia 5600 768 Ram
AMD 2600 Nvidia 5200 512 Ram
Well shipping a computer would cost a decent amount because of the weight, probably like $30 or so. If you payed for insurance (7.20/8.20), delivery confirmation (.55) and shipping supplies (box - padding), it could go up quite a bit.
Ebay fees and paypal fees really get you; it's not really worth the time involved in selling desktops. Unless you get distributor prices directly from the manufacturers, you are going to have a fun time haggling resellers. Plus, most people don't understand the difference between the parts you choose. This means most ebay hard drives on ebay have a 2mb buffer and are ata 100. Also the motherboards are most likely the lowest end possible, like ECS. They'll also have onboard video and little ram, etc... If you do anything different it will cost you more and the customer doesn't understand the value. Plus the comps I made have extra case fans and lights, which cost money.
I'm loosing money on those comps like the auctions says...unless I somehow get a bunch of bidders. :/