It's not? Maybe there is some dynamic pricing going on, but it's 79 Euro (~91.75 USD). Which would be close to the US price with Hungary's VAT (27%, which is I think the highest). Then add stuff like copying levy onto it and you'll land on roughly the same price, even with a lower average VAT. https://en.wikipedia.org/wiki/Private_copying_levy
Maybe they compared the model with the base to the one without? The one with base is more expensive in the US too though.
GP says its $105 in the EU. I do not think VAT is high enough to explain that anywhere in the EU?