Rate to make international call with simple choice north america plan?

Document 1 is if you're in the US making a call to China.  It states the rates as you experienced.  Basically, if you plan on calling China for more than 5 minutes, you're better off adding the $15 plan.

Document 2 is if you were in China making a call.

I cannot say whether or not the rates in Document 1 have changed,  I also do not know what requirements a provider has when their international long distance rates change.  Though, I do know there was a change to the rates in the second document (foreign roaming) recently and I got an email.  So, maybe they'd send a mass email if local to international calls rates changed?  I don't know.