It is a nice setup. This particular expansion chassis is kind of like a mini A4000T. It's just that the seller doesn't really know what he's selling--he has and idea but that's it. The Toaster/Flyer systems that go for this kind of money are usually complete systems sold by the original owner with all documentation and accessories.
And I did get a reply to my message. The seller said that he would refund the money if the buyer wasn't satisified and pointed out his 100% positive feedback so it looks like he's no Doomy. Still, I recently saw an A4000T with a Toaster,TBC IV,Picasso II, Par card and manuals go unsold for minumum bid of $800--relisted with original minumum bid of $900-- so I'd say his chances of getting his price on the first listing are pretty slim.