Banksy, I’m assuming you know about at this point. Google, if not. As an anonymous street artist, his work is generally NFS. So, when this piece was spotted in LA, the gas station owner was approached to remove the piece when he was about to sell the building. The auction estimate, I’m sure, makes it worth the all of the trouble. Check out this video on the Julien's link that shows how it all went down. Banksy, Flower Girl, 2008, 9 x 8′, black and silver aerosol and exterior semi-gloss on brick façade at Julien’s Street Art Auction in Hollywood, estimate $150,000 – $300,000. (via Julien’s Auctions)