1 If more than 13 ounces, see Priority Mail (footnote #4) on page 3. 2  For weights over 3.5 ounces, see Large Envelopes prices. 3  The card price applies to each single or double postcard when originally mailed; reply half of double postcard must be designed for reply mail purposes only.
http://www.degraeve.com/current-stamp-price.php
$2.04. You can attach stamps to large envelopes and small packages to be sent through First Class Mail as long as you’ve met USPS’s weight restrictions. It costs $0.98 to send the first ounce of a large envelope and $2.04 for the first 3 ounces of a small package.
http://www.stamps.com/usps/first-class-mail/
First Class Mail is the most popular and economical way to send items through USPS. You can send standard postcards, letters and large envelopes and small packages up to 13 ounces using First Class Mail. If the letter or package is over 13 ounces, you must upgrade the mail class to Priority Mail. While there are no guaranteed delivery times for First Class Mail, letters or packages typically take two to three days to arrive at their final destination in the U.S.
http://www.stamps.com/usps/first-class-mail/
1 Large envelope-sized pieces that are rigid, nonrectangular, or not uniformly thick pay parcel prices. 2  For keys and identification devices, add $0.83. 3  If more than 13 ounces, see Priority Mail (footnote #4) on page 3. 4  For weights over 3.5 ounces, see Large Envelopes prices.
http://www.degraeve.com/current-stamp-price.php
1 Letters that meet one or more of the nonmachinable characteristics in DMM 101.1.2 are subject to the $0.21 nonmachinable surcharge. 2  Large envelope-sized pieces that are rigid, nonrectangular, or not uniformly thick pay parcel prices. 3  For keys and identification devices, add $0.83.
http://www.degraeve.com/current-stamp-price.php
The current US postage stamp price is 46 cents. To send a letter by post, one will have to pay 46 cents for the first ounce and another 20 cents for each additional ounce. 14 people found this useful. Edit. Share to: Mark Swarthout. 775,933 Contributions. Collector for over 40 years, 25+ year member of the APS. Exhibited on a national level.
http://www.answers.com/Q/One_us_postage_stamp_covers_what_weight_of_letter
US stamps come in different denominations, but if you just asked for a stamp you would probably get a 44 -cent stamp which pays postage on a letter of up to one ounce. The forever stamps currently are considered to be 44-cent denomination.
http://www.answers.com/Q/One_us_postage_stamp_covers_what_weight_of_letter
$0.70 Stamp Choices. The USPS offers four wedding-themed stamps at the $0.70 cent face-value. They also have two other $0.70 stamps (a butterfly and a picture of African-American aviator C. Alfred Chief Anderson) at face-value.
http://weddingstamps.us/70-cent-stamps
Please see the 71 cent stamps page for new pricing and information for two ounce stamps. If you are sending your invitations after January 26th, 2014, a 70 cent stamp is needed if your wedding mail is either: 1  A 2 oz letter. 2  A 1 oz letter that is odd-sized.
http://weddingstamps.us/70-cent-stamps
Stamps for Odd Size 1 oz Letters. If you are mailing your wedding invitations in 2015 and it weighs 1oz but is considered an odd-size or nonmachineable you will need a 70 cent stamp to mail it 1st-class. The post office charges a 21 cent surcharge (included in the $0.70 price) for odd-size mailings which includes:
http://weddingstamps.us/70-cent-stamps
how much weight does a stamp cover
The weight of a stamp cover is 13 ounces. A stamp cover weighs 13 ounces.