Also depends on what the shop is selling and to whom. Here in our rural area so many shops/post offices have closed because the owners just couldn't earn enough to live on. Most of the shops were general stores which were only used for newspapers - so very early mornings there - and people would occasionally buy a loaf or a chocolate bar but would drive to the nearest supermarket for everything else. Small shops just cannot be competitive price wise with supermarkets and so many people use credit cards nowadays which is also expensive for a small retailer.
Sorry to sound so down on this Sarah but would hate you to work so hard for so little and then when would you find time to craft???

Love Lynn xx