Cart competitors

Have you ever noticed how local grocery chains have a habit of displaying a few shopping carts, filled to the brim in their entry ways, each labeled with a price for the whole load at their store and at their competitors?

If you're at Weis, the Weis cart will always be the lowest price one. If you're at Giant, Giant's cart will be the better deal. Same for Wegman's. Or wherever.

The other day, I wondered how that could be accurate. I quickly realized that each store's display likely contains different items.

Do the supermarkets really think we're not smart enough to notice this? Do they think we don't shop around? Especially here in York County...