When testing local StoreKit testing in Xcode 12, changing "Editor - Default Localisation" to something different from English US or UK results in priceLocale present, but regionCode (countryCode) set to nil. Seems like a bug, but there you go - it is nil.

Have you found the solution to this? I need to support iOS 14 and I have this issue on 14.0 simulator, but not the 14.8.1 device

3.1.3(e) Goods and Services Outside of the App: If your app enables people to purchase physical goods or services that will be consumed outside of the app, you must use purchase methods other than in-app purchase to collect those payments, such as Apple Pay or traditional credit card entry.