So I'm trying to sell my car. All of a sudden I get a call from an High End Dealership that sells Maserati, Ferrari's and etc. They told me that there customers were looking for my specific kind of car and color and said would I like for them to sell the car for me. They only thing that they will charge me for is the price of smog and engine check which will run about $500. They issue that I'm concern about is that the dealer is trying to scam for more money than I'm trying to get it for? Is it fake? Or if they might charge a fee later on for helping me sell the car?