I am 71 and retired trying to supplement my SS. I am a seller of what I find in my treasure hunt. My problem now is you would think I was a hoarder. From all the treasures that haven't sold. What kills me on a sell is what I paid for the item, packing cost, unless I can't find it free, the cost of a place to sell it from then there's shipping. And if a classified site isn't popular or well known like ebay. Your listing could sit for months with no views what good is that. Of course it comes down to another expense paying to advertise.