If you have time to spare, then Parcel Post by the USPS will be the cheapest. If speed is more important, then Priority Mail is your best choice. Stay away from UPS or FedEx, as it will cost you your first born. If it is something that is heavier (more than 70 lbs) or larger than what the USPS will accept, then go through a freight forwarder.
This is a common problem for people who live in Alaska, and also in Hawaii, because not all merchants will ship via USPS, so sometimes it's challenging to find an affordable shipping solution.
airplanes
By ship, to Alaska.
The cheapest and easiest way is by e-mail.
The cheapest way to ship a quarter would be in a standard letter size envelope through first class mail. It would cost you the price of one first class stamp.
Yes, the cheapest way was to travel by water because by land you had to walk unlike in water which has currents. It does the walking for you.
The cheapest and most affordable way to get to Hawaii is by airplane. The other alternative would be by cruise ship.
U.S. Postal service for smaller items and a freight forewarding company for larger items. We ship most of our silk plants and trees by USPS. It takes slightly longer but it's a bargain compared to most shipping companies. http://www.qualitysilkplants.com
It is the fastest and cheapest way to move a ship between the Atlantic Ocean and the Pacific Ocean.
Your mass doesn't depend on gravity. You have the same mass whether you're on earth, on the moon, or in a space ship on the way.
Cheapest way is by Rectifiers.
standard shipping means it might take a week or not ten days
The cheapest way to build a helicopter is to build a LOT of them. This way you get economies of scale.