As for as I recall, he puts it up for sale every few months, and then no one wants to pay that much and it is dropped; email him and see.
You can pick up an Amiga Technologies version with a slightly different lower plastic piece for around $900 to $1200 USD stock depending on condition; many (like mine) are fully expanded with enough stuff to make a Christmas goose envious -- they go for a wee bit more to cover the costs of the CSPPC, Mediator, Deneb, Radeon 9200, Indivision AGA, DVD-R/W in SATA and IDE, wickedly large SCSI-3 15K 147 GB HDDs, ZorRam, and stuff.