Does the condensor fan blade make any noise? A good service technician with a set of channel locks should be able to straighten that slightly dented cabinet. You probably tried to sell them a new unit. Shame on you, trying to profit unnecessarily.
If the homeowners brother-in-law can get the panels, how much will you charge to repair it? My uncle said it shouldn't cost very much. Change this out and sell the unit on e-bay. Newer, slightly dented, top of the line condensing unit.