Yes if you're using the mail.
If you are emailing, its free =P
its free absolutely free
If you are talking about North Pole Alaska then yes it is valid. As a matter of fact most letters to Santa Clause go to North Pole Alaska.
No.
Easy. When you want to travel ANYWHERE from the North Pole, you will be going south.
It takes about 12,450.5 miles from the north pole to the south pole or south pole to north pole.
in north pole
north pole north pole north pole
To see both the north celestial pole and the south celestial pole at the same time a person would need to standing at the equator. The atmospheric haze may interfere near the horizon may obstruct the view.
The north pole
North Pole.
North Pole
no it is not in the north pole