The rate for USPS flat rate envelopes through Priority Mail International is $19.95 to Canada. Depending on how much weight you are shipping, it may be significantly cheaper to ship through standard mail.
69 mins.
4 to 5 days
The USPS does not mail from China, they have their own postal service. kurtdriverUSPS does ship via International Express USPS both from and to China; Priority Mail as well. I just verified this via their website. Delivery times are guaranteed within a timeframe and tracking is standard on Express.
Yes, USPS does but UPS and FedEx do not.
Yes.
Yes
Yes, of course
Troll and Toad does ship to New Zealand and most other countries. Usually USPS International or Fed-Ex depending on your preference or what you order. Troll and Toad Employee
Approximately 2 weeks to reach your PO box.
No.
They ship both ways.