I can guarantee, you'll save more and earn 2% with Axis ace if you simply shop groceries at Dmart. For a 7k bill everymonth, I'll save atlest 2000-2500 on the bill and 2% with Axis ace.
While instamart has some discounts it isn't as big as Dmart and I rather trust loose items like rice, sugar, rava and other flour items and bean items at Dmart compared to pricey packets that instamart sells.