Sadly, this model won't work for Europe where tuition fees are very low already. I can give you an example with UK, where I did my bachelor at a top 10 university for roughly 10k GBP (i.e. 3k per year). My masters degree at a top 3 university was 6k and it lasted a single year.
Would you say that Europe is a target market for you? Have you thought about how you would tackle it?
Those numbers are massively out of date. Even Warwick (cheapest top-10 university in England and Wales, Scotland is a different story) is at least £6750K per year for UK undergrads.
Many universities charge the full £9250 allowed.
Granted, that's still considerably less than $100K
Would you say that Europe is a target market for you? Have you thought about how you would tackle it?