@Boingboss:
Don't you seem to have missed the point a little here? You're not paying $630 for the power of the machine, they're paying that amount for the fact that it's a rare item - that will make a vintage machine work at recent (ish) standards. Sure, if you want pure computing power you buy a PC, but there's not the enthusiastic following with a PC. Look how long Amiga Format survived while there was virtually no new commerical software coming out for the machine!