Julien's Auctions have several Porl Thompson items listed in their Icons & Idols 2012: Rock n Roll auction. The Porl items are lots #157-170, and include guitars, equipment, clothing and 1 piece of artwork. Auction starts on Dec. 1st at 10am PST.
(Thanks @curelive)
Update: Watch it live and bid here. And it's over. Hope you got what you wanted.