How to sell a damaged car in Poland?

Can anyone tell me how to sell a damaged cars in Poland?. The car still runs but has a transmission problem.

You can sell every car in Poland but with transmission problem you must sell it cheaper. It must be the cheapest on the market.

Like any other car except that you check DAMAGED in the CONDITION box on that site where you are going to put your ad. And later in the description you elaborate on details about the damage. Simple.