A few weeks ago Eric Doeringer asked me to contribute to a project, RPFleaMarket, that poured Richard Prince-related appropriation objects into the eBay mold of Rob Pruitt's Flea Market. It's pretty awesome, and like Rob's own joint, everything comes with an autographed photo of the item for sale.
So if a never-released Untitled (300x404) proof printed on aluminum is not enticing enough for you, this one comes with a glossy 8x10 photo of it, suitable for framing!
There are also a couple of one-off hand-altered editions of the Cariou v. Prince documents, and a whole host of interesting objects, artifacts, publications, and LMAO IDKs. Check it out on Eric's eBay page.