Its all in the title...the frame is two years old, general wear on it but no crashes at all. If your frame is newer i'd be prepared to pay a little on top...
Never managed it seated but I do try it seated before I stand up and let rip. Did it once on the fulham road with some tart behind me - I turned round, saw her expression and laughed my way home..
2nd dibs mamiya....aghhhhh