Yes RoD. I agree that Obes could probably chop off another 10% to maybe even 20% in some cases if he watched shipping charges carefully by using multiple source shopping.
I was just attempting to show that for around $600 minus whatever he sells his current rig for, he and Sam would have a brand new rig for around $400. The new rig would be completely up to date, years more durable, with the latest 64 bit OS, and capable of any gaming, home-work, or daily uses required for another several years.
Finally, I again have to mention, that this is a historical high in bang for your buck in home computing.