If you want to see a ripoff just look at prime pantry. Most of those items you can use clicklist on and pickup same day at a Kroger store. Walmart has the same as well.
If you can easily get to a Kroger or Walmart and don't mind this errand, I don't think you're the target market for Prime Pantry. If you live in a city without a car, lots of things are either less convenient or more expensive. The grocery stores themselves are expensive, and if I'm going to have to walk or Uber home with my groceries that adds an extra hassle or cost. At that point something like prime pantry can be very worth it.
I get that, completely fair use case. There's Jet.com as well and no memberships and free shipping (opposed to the 5.99/box) prime pantry charges. Target does some things on a subscription basis that beats out amazon pretty much across the board too.
