Have you provided the pics that people have asked for? When you're selling things, it's on you to do the work to make the sale happen. It takes pictures to sell things online. When you post a sale thread, it is way better to post pics up front. But if you don't & people ask for them, you should respond in the thread with the pictures or send the private message to them and include the pic. The more information you provide, and the easier you make it for them to buy from you, the more likely you are to sell things. People won't work to give you their money.