Higher donut prices seen in some countries doesn't actually have anything to do with EA.
This year, Apple and Google have been adjusting (read: mostly increasing) their prices for apps and in-app-purchases to adjust for 1) VAT being charged in some parts of the world, especially Europe, and 2) to a lesser extent, changes in exchange rates.
Search for "apple vat" to learn more. The rate increases aren't totally uniform, e.g., a £0.69 purchase might now cost £0.79, while one at the £1.49 price point might be left alone. It's annoying, but that's taxes for ya.