No loyalty from P&P if you do not have smart shopper and added cost to the customer

If one does A work-study on P&P smart shopper on can see that t costing the customers in that the admin, the cost of all the advertising in the shop, cashier time and operating expenses Take this as to the number of transactions done in a day (millions) have to be recovered somewhere and the only place is on the selling price so why is the best price not displayed on the shelf. I have been shopping at P&P for 50 years but now look for places that do not use loyalty cards and above all if the computer system is compromised what accountability does P&P take? Your information could fall in the wrong hands. I would like all those costs subtracted and that best price be the shelf price