I have a thomson masterpiece seatpost for sale, in very good condition. Some clamping marks where it was clamped but otherwise the shaft is clean. It was a 350mm length cut down to 290mm.
http://i132.photobucket.com/albums/q34/lobos8403/DSC_5293.jpg
http://i132.photobucket.com/albums/q34/lobos8403/DSC_5294.jpg
These are going for about 120 new so lets say 75 shipped to your door.