However, since then, Netflix has revamped the help-center pages for all the countries with account-sharing with different info, so none of the information that was "leaked" is even relevant anymore.

 However, since then, Netflix has revamped the help-center pages for all the countries with account-sharing with different info, so none of the information that was "leaked" is even relevant anymore. 

How did Netflix come up with these fees? 

As noted above, the password-sharing fee system that Netflix will roll out appears to be modeled on a scheme the company has been testing in Chile, Costa Rica and Peru since March. 

Netflix tested a different concept elsewhere in Latin America. In July, the company said it was trying out a method in Argentina, the Dominican Republic, El Salvador, Guatemala and Honduras that established an account's primary residence as the "home" for the membership. If the service detected streaming at any additional households for more than two weeks, it would prompt the account holder to set up -- and pay for -- additional "homes," with a limit on how many additional homes you can add, depending on how much you're already paying for Netflix. 

But Netflix appears to be dropping this "additional homes" model in favor of the other one it tested in Chile, Costa Rica and Peru.