I know that you can still buy dailies on
http://www.badassteens.com for only $6/day. I get great traffic from there but your thumbs have to be good.
i know the guy at
www.sweetcollegegirls.com sells advertising but I haven't bought from him in a while.
www.babe5.com is $4/day
www.gorillalinks.com is 20 bucks for 30 days.
those are about the only ones i buy anymore.