The cynical part of me wonders if we should share our knowledge and let the rest of the world rot.

It's a bit like me justifying price discrimination for a capacity restricted route http://www.flyertalk.com/forum/briti...l#post25916250 - of course I'm assuming I'm the one who can access the ex-EU fares.

At least in HK, the argument the merchant's argument won't wash as the HKMA (CFPB and Fed integrated) spent a lot of effort making merchants identify the fees levied with charging HKD overseas.

Perhaps educating the masses is the government's job, not us. We just educate each other in the know.