App to sell-buy used goods

Hello,

This is the design of an app to sell and buy used goods. Users will have all the freedom of listing, un-listing goods. loading image and products' description and pricing. Usable goods can be listed through this app. Both buyer and seller will have the freedom to bargain on the product's price. Seller will be responsible for shipping with the cost from the buyer. I hope you will like this design concept. Thanks in advance.