Different price for different countries
You can't have different price for different country. The only thing is when you choose a tier, it is not the same value according to the country currency.
e.g. : tier 1 = $.99 (US) = .79€ (Europe) = 230 Yens (Japan)
If you really want to have different prices, you must have the same app multiple times.
e.g. :
Application 1 : only distributed on US country (at any tier)
Application 1 bis : distributed on other country than US (at any other tier)
Application 1 and Application 1 bis is exactly the same application, but with a little difference, e.g. language (if you do not localize your app)
It is possible now! Now you can set different prices based on territories for the same IAP package.
https://developer.apple.com/library/content/documentation/LanguagesUtilities/Conceptual/iTunesConnectInAppPurchase_Guide/Chapters/WorkingWithYourProductsStatus.html
Meanwhile, there is an SDK (Mage) available, which is also working for consumables and non-consumables (unlike with iTunes Connect where it only works with subscriptions). Additionally, they automatically take care of optimizing prices according to the markets. You can find the documentation in the repository (there is an android as well as react-native SDK available too).
If you are using the option in iTunes Connect to change subscription prices according to locations be aware, that:
- If you reduce your prices: all existing customers will also profit from that immediately.
- If you increase your prices: all existing customers will be warned and get the opportunity to cancel.
For full disclosure, I'm one of the Co-Founders. We faced the same problems like you multiple times. This is why we created Mage.