While I agree with you to an extent, this is not a very good way to check actual in-store prices. Most grocery stores charge a different rate for products that are delivered or even curbsided than they do if you go to the store and buy it yourself. This is true even if you go directly vs. going through an intermediary like DoorDash.

I live in coastal CA and the cheapest eggs at my local market are $3.49/dozen. Trader Joes and Costco are closer to $2.20/dozen if you just want plain white eggs. The moment you go organic, the cheapest is Costco at about $4/dozen.

Edit: Just to be clear, at Costco you buy 2 dozen rather than 1 and I've divided the price to a single dozen.