The price can vary a great deal depending on the type of 'kiloware' it is. It will be more if it is all commemorative stamps. The most would be high values with airmail stamps. The lowest would be definitives issued by a country such as the US, Great Britain or France.
Depends where you are sending it
For an envelope that weighs 5 ounces, you would need 5 Forever stamps. Forever stamps are typically for 1-ounce letters, so you would need to use multiple stamps to cover the additional weight.
how much are 5 1969 price of wales stamps worth
It depends what country and how far you are sending it.
42
5 ounces
.5 liters = 16.91 US fluid ounces.
5 fluid ounces = 0.147868 liters
5 quarts is 160 ounces
1 pound = 16 ounces 5 pounds 10 ounces = 5 x 16 + 10 = 90 ounces
The first ounce or less: 44 centsMore than one ounce but not over 2 ounces: 61 centsMore than two ounces but not over 3 ounces: 78 centsMore than three ounces but not over 3.5 ounces: 95 centsIf over 3.5 ounces, the letter is subject to the large envelope rate.As you letter weighs 4 ounces, but less than 5 ounces, it is subject to the large envelope rate. The large envelop rate for four ounces is $1.39. Which means you will need to use 4 forever stamps (44 cent stamps).
0.8 ounces.