I agree on cleaning a car when you are trying to sell it It seems anymore it is just too much effort for some people to do. I don't know how many times Ive seen ads for a car with only a one sentence description, if that, and blurry night images that are so bad that you cannot tell if its even the same car as advertised. Or you get the great day shots that all you can see is the sun, or a poor angle of the car, like just a partial front bumper (and of course that's the ONLY picture in the ad). Interior shots with overflowing ash trays, and fast food wrappers up to the seats. Pretty much says how they take care of the car, and something that probably has been neglected in other areas too. If you cant put the effort in writing an ad to sell me on the car, its too much effort for me to get interested in it.
Its sad how lazy people are getting in ads but expect premium prices.