The price is really good for the first 50 countries. It's a bit strange that list "A" contains Belarus but not Ukraine or Russia. But then, local SIM plans in the latter two is dirty cheap anyway, and so is Europe with their EU-wide roaming.

Where it can really come handy is in Canada. Hell, even Canadians who have VOIP numbers can save money in their own country by roaming I just need to hear about people's experience with Red Pocket Global. Mint Mobile offers roaming too, but apparently it (the data part) doesn't work in most of the countries.