Same here. Can't comment on that, because I don't know the Axxess, and my Bastard is a 168. Yep, it's part of the Pureboarding idea: one man, one board, so to speak.
In Europe (i.e. carversparadise), the Bastard/BD costs about US$ 750,- before taxes, which certainly is real money, but not outrageous for a well-built quality board (non-metal). Joerg regularly visits the States, so you might get in touch with him via pureboarding.com if you want to work something out.
I have never seen a used PB board in the classifieds of ANY alpine forum. One Bastard was offered to me privately because it was a 162 from before the 168 came out, and the owner wanted to upgrade to the 168. But that was it.