How this marketplace works?

The marketplace is now available only in the countries and territories US, Britain, Australia and New Zealand and that too only on app. A user has to just tap the marketplace button in the app which will guide him to the space, there the user has to choose to buy or sell if he wants to sell he has to post an advertisement with a good photo of the product and give the relevant details of the product and place it in the catalogue. A buyer can just visit the marketplace and choose the product and can directly ping the seller that he is interested. Once the deal is set they have to notify the marketplace and close the deal. The shipping and handing over the product should be taken care by the seller.