i think that people mostly buy is gadget or console also games and voucher. i dont feel like they want to buy food from the online shop because of the shipping times maybe take too long, so they would go to shop nearby.
my recommend for the shop is selling online goods like voucher cause that is more efficient for shipping time.
In my own view, I see no. Mostly gadget and consoles are commonly sold at the physical stores and only few numbers deals with that thru online store. It's far cheaper if those electronics are done physically than in an online store which will cost you also the shipping fees if your location is not supported.
But it doesn't mean that it's not appropriate to sell things like that online. We just have to learn if that products will able to meet our criteria in order to called it success.
Do you think that there may be problems with this moment? In my opinion it is with the help of the Internet you can find buyers for a variety of products.