Ooo, that is interesting. There was a website that kind of did that, but you could only compare single items at any given time, which kind of defeats the purpose (if it is to save money).
Ideallly I'd like to see something like a personal basket where you can add your recurring stuff (eggs, milk, etc) and compare the subtotal among local grocers. Bonus points if you add in value of store points + credit card bonuses (which might be significant, like 5% for Amex cobalt at a market coded as a grocer VS 1% for non grocer code like Walmart).
I'd like to do something similar to the "personal basket" as a way of comparing "value" at different vendors. Thinking of using $/100g of common sandwich ingredients to demonstrate how much "making the same sandwich" at different stores would cost you. I'm not aiming to use this data for a product/commercial endeavour, though.
Ideallly I'd like to see something like a personal basket where you can add your recurring stuff (eggs, milk, etc) and compare the subtotal among local grocers. Bonus points if you add in value of store points + credit card bonuses (which might be significant, like 5% for Amex cobalt at a market coded as a grocer VS 1% for non grocer code like Walmart).