Not sure if Microsoft is aware that when active users are in the Market Place app, and there is a price change, the user is not notified of the price until after the installation process starts.
I have had this happen to me when an application I was going to install, moves from a FREE application to a PAID application, the user is badly notified of this. Firstly the option is INSTALL not to buy, the next screen was requesting to update payment details... with no information about cost occured. The a blue dialog box states that there has been a price change, and to refresh (with an OK as a reply), then the next screen states that it was PURCHASED and starts to install. So without being told the application cost money, and verify if I want to pay that cost, it goes ahead and debits my account and starts to install the application.
I have been transfered serveral times in one call, called 3 different numbers that all have the same IVR system that offer the same options, with no person that states to "call this number" saying which department to call, "just call that number, they will help you". After 5 calls all I have got is a case and an escalatation, they can't even see the transaction where I am staring at it in commerce.microsoft.com's website. Surely MS Support should know how to help a customer in this situation, was this not an important runbook incident for MS?
The other issue, is that there seeminly is no EASY way to refresh the screen in Windows 8's Marketplace to view if an app has had a price change.
F5 does not recheck the information it has already cached, this was the first MS Supports person response. MS Support have then stated that the only way is to log out then back in to Windows 8 Marketplace to see the reflected price changes. TERRIBLE!