OK

I believe this is what you are refurring to.

 

The Universal Postal Union, established by the Treaty of Bern of 1874, is a specialized agency of the United Nations that coordinates postal policies among member nations, in addition to the worldwide postal system.

 

A user pays system would cost a lot to implement and could end up costing just as much as the cost of delivery overseas mail.

Under the current system a lot more people benefit than is immediately obvious. Anyone who buys goods from China and has them delivered through the postal system benefits from not having to pay higher postage. If any of those people resell the goods, the people who buy them benefit because if the original postage cost a lot more, the end price would be a lot higher.

It's not always possible to implement a user pays system easily. I don't think it's fair that I pay several hundred dollars a year for a garbage collection service that I rarely use but I have to live with the fact that because I'm efficient and recycle the little garbage I have, I end up subsidising the lazy wasters who pay less than their share. I don't really expect the council to spend a fortune developing a system where the user pays because it'd be unrealistic.