THey may pull a trick like RyanAir.

Buying a ticket on the RyanAir website, the price is shown in euros all the waty through, including in big figures at the bottom right on the page where you click to purchase. What many miss is a very small but pre-checked box off to the left that offers currency conversion. To avoid your purchase being charged in your own currency at a very bad rate, you have to find and uncheck this box.

Under US consumer law, this would clearly be deemed an ''unfair and deceptive business practice'' and they would get reamed out in the courts for it. I am wondering if a class action against US based credit card companies like MC and Visa for ALLOWING these things to be done might work to put a stop to these frauds.