$3.29
$0.88 for under an ounce, $1.05 for between one and two ounces. Add $0.17 for each additional ounce.
the USPS charges by weight and not by size
1.35
Yes, it is the same for the same weight. Both are considered 'oversized' mail or 'flats' and cost more than a normal business envelope. the current rate would be 88 cents for the first ounce and 17 cents for each additional ounce.
The first ounce will cost 88 cents. Each additional ounce will cost 17 cents. 6 pages of regular computer paper is about 1 ounce.
You will need postage for the weight of the envelope (probably 2 ounces, for 4 sheets of paper in a 10x13 envelope), plus a surcharge for the size of the envelope. Best guess: $1.19 for first class mail within the United States, as of Feb. 2014.
I went to the post office today (1/07/11) and one manilla envelope (without the metal fastener) with one piece of paper in it cost $.88 - it weighed 1 ounce. The second envelope contained 8 pages and weighed 3 ounces and cost $1.22. So by my calculations the envelope alone weighed about an ounce and 8 sheets of 8.5x11" weighs 2 ounces. Hope that helps.
I went to the post office today (1/07/11) and one manilla envelope (without the metal fastener) with one piece of paper in it cost $.88 - it weighed 1 ounce. The second envelope contained 8 pages and weighed 3 ounces and cost $1.22. So by my calculations the envelope alone weighed about an ounce and 8 sheets of 8.5x11" weighs 2 ounces. Hope that helps.
It depends mainly on the weight. Take it to the post office and they will happily calculate this for you. (I can't actually guarantee they'll be happy about it, though they certainly should be happy that someone is still using the US mail.)
I just weighed my letter size envelope with 12 standard pieces of paper folded inside and it was 2 ounces. According to USPS.com, the cost is $.64. I am using 2 forever stamps to get the letter on its way. If you can't fold the paper like a normal letter, go to USPS.com where they provide a convenient postage price calculater.
9/12 - 4/12 = 5/12