One metric that I recommend that you look at is the methods of payment.
Although in my experience retailers need to allow their customers to use a lot of different methods of payment, as a way of maximising their trade. The problem is that many systems do incur extra fees and its a good idea to review it. One point that you need to consider is that cash handling is not free and does have a cost too.
Check out how your customers are paying and get a breakdown.
According to the reserve bank, current trends are here:
