[ludwigschubert]

Hm, I’m not sure from your comment if you’ve seen this: if you scroll down on an app’s App Store page, there’s an “Information” section with an “In-App Purchases” subsection that you can expand to see all In-App purchase names and their associated prices.

[pan69]

Even after you pointed it out, I really had to search the page for it and finally found it tucked away if the far bottom right corner of the page.. I can totally imagine that for those who do not know where to look specifically, that they'll never see this information.