I've got two that I'm going to put up for sale. But I think shipping to USA will be a killer. Besides, there might be a PSU problem too.
I fear that shipping of a machine to the US would quickly be $180 before you and I started discussing what you'd pay for the machine.
Box 1 is a Mediator Tower in dire need of TLC. It can be bundled with a Mediator 4000D PCI package (for that tower).
Box 2 is a plain A4000D desktop.
Motherboard 1 is a plain Amiga4000 rev B motherboard.
Motherboard 2 is a A4000 rev D cost reduced motherboard. This one is more expensive.
Motherboard 1 has had a full overhaul in NZ by Anthony, and is guaranteed in tip top shape and no battery leakage. It has a CR2032 coin cell battery.
But... Overseas... Shipping is a killer, and you'd still have to do something about the power situation.
Should we bother. Or do you want me to see what I want for a configuration?