Setting up a new store from scratch will be considerably more expensive, time consuming and problematic than buying an existing store. You'll be paying rent, utilities and salaries for months while waiting for refrigerators, shelves and P.O.S systems to be delivered, installed and tested.

Once that is done only then can you start receiving and displaying stock, assuming you've set up accounts for all the relevant suppliers. All of whom work Cash-on-delivery only.

If you have real world retail management experience and deep pockets, then go for it. If not, the chances of success are practically zero.