Same happened to me with a rental cars. When I travelled to Scotland I reserved one from the US. When I picked up the car they added a ton of mandatory fees that almost tripled the price. The person working there told me that they do this only to people from the US. People from Europe get shown the correct price.

Same happens with cell phones here. You sign up for a price and the first bill has several fees added making it quite a bit more expensive.

I wish there was a law in the US that mandated that the paid price is the advertised price.