Outwit the grocery store pricing schemes

Are you as tired as I am of discriminatory grocery store "sale" pricing? Why should I, as a single woman on a budget, have to buy 5 pounds of cheese to get the sale price? I can't possibly (or at least, healthily) consume that much before it goes bad. It also discriminates against those who can't afford to shell out that much money upfront or don't have room to store it. HERE'S MY IDEA. Let's form a group to take advantage of these sales together. I haven't figured out all the logistics yet, but maybe we could share lists of items we commonly purchase and then share them (and the savings) when we see them at the store. E.g. if I know you like cheese, I would text you when I see a sale like the one pictured and see if you need any. If you think the idea is worth exploring, let me know and we can brainstorm ways to make it work.