Yep.
154 made in two variants.
You can still buy one, though. I think it's around $15000. (For some reason I want to say $40k, but that's probably not right.)
Mags are $450.
But hey, it comes with a Schmidt & Bender scope (not exactly your average Tasco) that usually cost about $2500, so you're really getting a steal.
Regarding the Geneth G2000 from the auction, it's an APS based spring rifle. So APS parts work in it. A lot of money to spend for a big, heavy rifle...