My M750 had a dent in the tank where the clip-ons pushed into the tank after a low speed fall. The bike had been painted a custom black metallic with a silver metallic stripe. To repair the dent and repaint that small area plus the seat cowl cost $350. It was abit high but I went to a guy who I knew would blend the paint and make it perfect.
The biggest pain was removing the tank and draining all the gas. Make sure you document where all the hoses connect to before removing them