I haven't been able to find a source so far for my comments about there being some minimum amount that can be paid in Europe. And I may have misremembered about exactly how the payments which had some limit were made. It may not have been credit cards, maybe SMS billing or something else more popular in Europe than it is here. But I haven't found a source either way so if anyone else finds something related to minimum payment amounts allowed I'd be very interested to know what the hell I was talking about.
