Well, the card came today, and it works great!
I did have a little trouble getting it to work in pdaxrom 1.0.5 at first, but someone over in #cacko helped me out. I couldn't get it working with the built in lan configuration software, so I wrote a script that does this:
#!/bin/sh
iwconfig eth0 mode managed essid myssid
/sbin/dhcpdc eth0
Maybe this kind of thing will be fixed in the next release.
I've looked everywhere, and I can't find this card cheaper anywhere. The above auctions have ended, but hopefully the seller will have more.
p.s. - I'm writing this using my Z & my new card
UPDATE: I got Kismet working last night using the instructions on pdaxrom's site, it works great with this card!