They're $109-$119 on eBay right now.

[marketing mode]

The SCSI2SD, however, is a more economical choice, because A) They're $65 (considerably cheaper, I say), B) They're Open Source, so you could go build one yourself to save a bit more $$$, C) They use microSD cards, which are much more common than CF cards (and you can get them cheaply in larger capacities), and D) They're compatible with the same machines as the AztecMonster, as far as I can tell.

[/marketing mode]

Does that answer your question?

c