I am in the market for a Triumph Bonneville T100. At a local used motorcycle shop, I found a nice Bonneville for $6K out the door for a 2010 model with 16,000 miles. Only trouble is there are 2 dents in the gas tank, and the bike appears to have been laid down on the right side, evidenced by visible scratching on the pipes. Otherwise it is mechanically sound, and full service has been performed by the sho, valves and fluids etc. The rear tire also looks a little low. I would be willing to pay about 5K out the door in cash, but they don't seem open to negotiate. I may go back this week to make an offer. How would you approach the shop owner to get the price down?