I would try to go for a used 6800XT, I snatched one at 320€ some months ago, it should be easy to find now for 300€. If you want performance for your money, and you use Linux, that would be my way to go.

The real problem here is that the “alternative” is a lot country specific alternatives that have no leverage to command worldwide adoption.

This could only be addressed ultimately by EU federalization. Let’s see how much time until people and governments take to realize this.