Two months ago, I tried unsuccessfully, to purchase several LGB items from Ridge Road Station using their online website. After several failed attempts I emailed them of the site problem and was told that it now contravenes U.S. law for a company within the States, to process an online credit card purchase from a foreign national outside the States. I was told to email my order with credit card account details and the order would be processed (which I did and received the goods shortly thereafter).
This does open up my credit card account details, including expiry date plus security code number to unscrupulous email hackers. The details were transmitted over several emails as a precaution. The effect of all this is that I no longer purchase from Ridge Road as I am unable to use the convenient and secure online site.
As a side note, at the same time I purchased several expensive diecast toys from a Chicago-based diecast specialist (3000toys) and they did accept my card details, but did take five working days to approve my card details. Online website purchases are really not very convenient without card access for payment.
Maybe someone outside the continental U.S. could comment if they have had similar experiences.