The problem for such physical seller is the shipping works. In my country the cost of shipping worldwide is pretty much than the price of goods and the guaranteed to the integrality of goods is the considering, actually it can use an insurance but of course add an extra cost.
How you think? Are you interested?
Shipping does not a matter to pay in bitcoin to buy a physical goods actually we need a fine seller who is best trust around the market to being in the business. If that is fine. Sure shipping cost no need to check and we can purchase physical items from anyone.