Best solutions for selling furniture, electronics, etc.

My parents have been in Kuwait for a while and are planning to retire and leave soon. What are the best websites to sell stuff through? Things like electronics, furniture, etc. Looking for something with less scams and where they can upload pics and chat and organize meetings for the exchange. Open to other options, where some company comes and buys everything, or is there a place where they can meet people who will buy in bulk or something. They live in Mahboula if that helps. Thanks!