Many reasons - fishing, put a line in sometimes you sell it way overpriced. Since CL ads are free, you might as well.
This seller has not done any research. Calls the S/C a turbo. Tries to help his potential buyer by saying it's only a Special.
He likes to write ads.
The car is no more than a $4000 car, so he will have it much longer, hence, not ready to sell.