Sync to the furthest read page. With Amazon's Whispersync technology, you can automatically save and sync your furthest page read, bookmarks, notes, and highlights across all your devices. That means you can start reading a book on one device, and pick up where you left off on another device.
Calculate your postage rate using the international postage price calculator. For a first-class letter to Canada, the first ounce of postage costs 85 cents, a two-ounce letter costs $1.17 and a three-ounce letter costs $1.49, as of the time of publication.
How much does it cost to mail a standard letter from USA to CHINA? The postage to mail a letter from the United States to China is  $1.15. This price assumed that the standard letter weighs one ounce  or less.he postage to mail a letter from the United States to China is  $1.15. This price assumed that the standard letter weighs one ounce  or less.