What is the reasoning behind the thing being 50% more expensive in the EU? Still reasonable, just wondering. Kinda like that this one is cheaper on the SSO pla

What is the reasoning behind the thing being 50% more expensive in the EU? Still reasonable, just wondering. Kinda like that this one is cheaper on the SSO plan than the other advertised here that starts at $20/user and proudly advertises no SSO tax. Kinda easy if you make your plan as expensive as github enterprise.