Fuck yeah. I can pick up a bundle of them for a couple of bucks at WalMart. I wear the cheapo kind of briefs.
I once sold a pair of boxers on eBay to a guy from Arkansas for 40 bucks. I dunno what he did with them but I can imagine. No skin off my ass, though. I hope he was happy... I was happy with the 40 bucks.
I've a bit of a panty fetish myself. I think I stole some chick's panties once, years ago.