€10K seems high to me. In France it would be lower than that, I think, save for maybe a handful of outliers. Google search suggests top earners in physics in academia in Germany is probably between €80K and €90K, or maxing out at €7.5K a month.

About 200k USD, I think? But isn’t 10k€/month relatively high for europe, like on the upper end of academic salaries?