For a 6.5 ounce item it depends on the shape of the item being mailed. If it will fit in a padded envelope, Postage and Shipping will be under $4.00. If a box is needed pricing will start at around $6.00. The website for USPS provides the tools to answer these questions and confirm pricing.
how much postage for a 9x12 envelope weighing 6.6 ounces
11.5 oz
65 million ounces = 4,062,500 pounds.
how much postage required for a 9x12 envelope weighing 4.6 ounces
How much does it cost to send a padded envelope to canada weighing 9 ounces
.94 cents.
$1.98 up to 2 ounces.
59 cents for up to 2 ounces.
1.35
$1.90
65 grams is 2.3 ounces.
65 ounces is 1.843 litres.