零售业签到？

如果用零售店面的签到来打折，比如每周都去逛Tesco，或者每周都在Coles买东西的顾客，年底给予特殊折扣（譬如相当于80美元），这样会不会极大促发顾客的积极性，改变钱包比例？

I am thinking about this possibility: If a customer is shopping at Coles each week for the whole year, and monthly spend is 100$ (or other suitable amount), how about giving a special discount to her in the year end?

It is more like a sign-in scheme with reward. As loyalty programme cost retailers 2% already, is it worthwhile to exclusively obtain the wallet share of the customer, using that 2% to reward those are really loyal (i.e. not shopping in other major competitors).