Deposits on parts

I pawn the odd car off on kijiji. If somebody wants me to remove my ad and lose potential sales, they pay a non refundable deposit. Otherwise, the ad stays up and it is for sale. I’m not really concerned about their issues with acquiring the money for the purchase. Not my problem. Distance and time I can work with. If they are serious, as mentioned above, they have no problem with this. We all have our own issues in life. Sometimes we just can’t or really shouldn’t buy things.