A 2006 cable complains to the US State Department that a number of large American companies, including Coca-Cola, have been massively overcharged at Karni Crossing with Gaza. They had to pay a $3,000 per-truckload processing fee, thirty times the normal rate.
While most crossing are managed by the IDF, Karni is the only crossing managed by the Israeli Airports Authority. Now imagine how much the IAA overcharges us in Ben Gurion airport.