I've got one on my watch list on ebay. It's got about 5 or so days left, and it's up to somewhere around $36 last time I checked earlier today. if it the price doesnt get too wild by the end of the auction, I might go for it if I havent bought one from a fellow APUGger. I'd rather find a seller here, but I'll go somewhere else if I'm not having any luck.
I'm not sure how much higher than $50 I'd go, but $80 would certainly be pushing it for me. I'm not in dire need for one; it's more of an "I'd like something a bit wider (especially when dealing with my Pentax that uses the "other" technology )" kind of situation.