Second hand goods marketplace -- 2

Hi! I need to create a marketplace where people can sell second hand objects. Anybody will be able to create an account and sell objects. The information about the product are online, so the platform should be able to do simple webscraping to get data regarding the product. The buyers will be able to filter through condition, prices, and locations of the products. I would like for the platform to have an app.
Additional but not necessary, when the seller is posting a product, the platform will ask the seller to take a picture of a specific random side of the product, so that the buyer knows that the seller is not faking the conditions of the product.