I just found one of these not long ago after looking for a month or so. Good luck finding one! You might also check Craigslist...I found one in Portland that I almost grabbed, but a user on here sold me one for less. It's a great card.
Also, if you end up not finding one, I have an X-Fi Titanium Pro over in my FS thread you could consider. Comparable card, just Creative instead of Asus. I got the Asus because I like Dolby Headphone over CMSS-3D, but some people prefer the latter.