> I’d wager that you could 10x for non-EU tourists

Except for normal people, where $400 a ticket is absolutely prohibitive. I can't imagine being able to take a family there at that sort of price. (To be honest, even at $40 that could add up quickly.)

I firmly believe institutions like museums should be accessible by everyone. I understand higher prices for non-EU people, on the logic that they need more income somehow and tourists are more likely to be able to afford it -- so long as they keep student prices, family/children prices etc.