For average monthly salaries –r/https://en.wikipedia.org/wiki/List_of_European_countries_by_average_wage
For iPhone prices – apple.com in different languages
When Apple announced prices for their new models I decided to compare some EU countries + USA. I took the most expensive iPhone – XS with 512GB memory. Graph shows only countries that have XS on their apple.com site. All salaries and prices are in their domestic currency.