Exact same experience. Instacart shopper cannot find extremely common items and tries to replace them with 2-3x more expensive options.

The whole model of the shopper walking the isles to pick the products is wrong. It's inefficient and a recipe for disappointment, because what you see on their web page is just a guess at what the store has and the shopper can find.

I too have used Instacart probably 10 times, but never will again. It is also all but guaranteed that Whole Foods will drop Instancart like a hot potato for their own in-house service, so the valuation is completely wrong in my opinion.