I am in the SF bay area, and have one Gorge camping ticket for sale. I'm willing to try to work out a way to mail the ticket, although since it would be difficult for the buyer to verify that it's an actual ticket, and difficult for me to ensure I'd get paid, it would be easiest to meet up with someone who's also in this area.
Alternately, I suppose I could meet up with someone at the festival, but I am only going Sunday and Monday, which might cause some issues.
I'm asking for $80 (which is $15 less than the original price.) I have a Craigslist posting here, and anyone who's interested can feel free to PM me.