As someone who often crosses the borders between Germany, Austria and Italy it is basically:
1. Enter my route at ÖBB (Austrians), DB (Germans) and Trenitalia (Italians) and see who is cheapest
2. Book one ticket for the whole trip
1. Enter my route at ÖBB (Austrians), DB (Germans) and Trenitalia (Italians) and see who is cheapest
2. Book one ticket for the whole trip
The fact that there might be a wage difference between different countries might be interesting, but it us utterly irrelevant to the fact that there is a price difference between tickets sold for the exact same train. Not an Austrian vs. a Polish train -- literally the same actual train with the same finite, exact seats for sale.