I have been informed that the auction to tour Penn Jilette's house in now back online. There were issues with the old auction (some problem about the winner having to catch a bullet in their teeth first or something) but this one should be legit. The auction page also features a picture of Penn's big giant head and drug-induced things in his house.
I have been to The Slammer briefly, and it's definitely worth a visit. All proceeds go to the James Randi Educational Foundation, of course, and the auction ends on April 16th at 6:00 p.m. Pacific time. Go! Bid!