Couple of years ago one sold for over $300, really not all that crazy seeing as nowadays 1200's on Ebay go for well over $200 (without accelerator) and with the Alphagen you get an amiga 1200 with a cd-rom solution, 3,5" IDE solution, ability to use ps2 keyboard, floppy mod etc.
Some come with an Ioblix 1200P parallel interface,
http://amiga.resource.cx/exp/ioblix1200pSome have
http://amiga.resource.cx/exp/search.pl?product=Typhoon+Mk2&company= internal SCSI II

It might even have a Blizzard 1260 in it

(not sure if that was a standard option).