Here's a new one for me. I reserved a car in the States through Dollar to be picked up at Schipol in Amsterdam. When I arrived at the off-site rental counter, the place was plastered with signs about cross-border fees. If you take the car out of the country -- you pay what appears to be 25 Euro per country. I was taking the car across 2 countries (Belgium and France), costing me 50 Euro. Guy at counter says it was a new fee since the first of the year. I don't know what happens if you tell them you're staying in the origin country, then slip across the border anyway, because if you have a fender bender or get a ticket in another country -- I'm sure there is a huge penalty.
This fee was not disclosed at the time I made the online reservation, although it was buried in the very fine print at the bottom of the confirmation email I received.
Anyone else encounter this in other countries or other agencies?