I'm curious, how do you calculate your grocery or drugstore savings? Do you calculate it based on regular retail prices? Do you calculate it based on sale prices? How do you calculate it using your reward points /bucks/ rewards? I've been trying to figure this out for a while. We save a lot each year on so many things! We don't ever buy toothpaste, razors, and other household products just because I can get it FREE or really cheap. I know I'm saving a lot because of that but how much am I really saving per trip? What formula do you use? I plan to find a couple formulas and post them here. Source Img: All You magazine