you clearly know nothing about the photography business. every one of a photographer's photos is meticulously gone over in photoshop to make sure that each detail, whether it be discoloration, too much light, not enough light, etc is taken care of. whether they sell the picture or not doesn't matter that much, it all goes in their portfolio.
even if you have to make money on it, there's still a lot of work to be done. when you're paying a photographer for stuff like that, if he's any good he'll have really taken the time to make the car look perfect. that said, there's only so much you can do with a car like the OP's. its not particularly shiny, purple is kinda a dull color and it doesn't look like it'd really be very vivid in a picture. thats just IMO.