Hello, I am trying to have excel tell me how much somthing would cost that increase by 10% each time you buy it. Example cost for 1 2500 cost for 2 is 2750 and 3 3000 each time the number goes up by 250 or 10%. What i am looking for is a formula so if i say i want to buy 20 of them, it will tell me the total cost. 8250.