Price of app or in app purchases prior to download

Hi,

I think millions of us want to know the price of the app or it’s price clearly stated (if it says In-app purchases) PRIOR to downloading, installing it…

it only makes sense and logic for Apple to add/edit this feature and waste less time in this enormous ocean of apps…

Q 1: how do I view or know the purchase list of prices of the app if it states in-app purchases PRIOR to any downloading and installing the app?

if the answer is I cannot, then

Q 2: when will Apple enable such a simple convenience for its users?