It would be easier to go down to your local library and check out a catalogue on US postal stamps. Even if it's a year or two out of date, the prices will still be current.
If your library doesn't have a copy, Ebay is a pretty good source for checking prices.
If they are the non-denominated US stamps, there is an identifier on the USPS web site. For collector values, check an online catalog, such as Mystic Stamps.
The face value is primarily 37 cents. Most used US postage stamps are worth 15 or 20 cents, the minimum amount required to catalog and stock the stamps. A number of stamps issued in 2002 have a bit higher values. Unused will always be worth at least their face value but some of these range in value to almost $2 each. Special cancellations and different values are likely to be worth more. Consult a postage stamp catalog, usually available at your local library for exact identification and catalog values.
The number of stamps will depend on what values you have. The total cost in the US in 2011 will be $1.97. That is 44 cents for the first ounce and 17 cents each for the additional ounces. Five first class stamps will cover it with 23 cents wasted.
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.
This is a very admirable hobby to get into as millions do in the US. You can get some ideas of value at values.hobbizine.com/stamps/index.html.
There are about 312,000,000 people in the US. (312 Million) Around 40 million are on food stamps.
100
If you are sending a three paged letter it is around three US stamps!!!!
No. US stamps are good for the U.S. postal service only.
No - Us stamps can only used on mail sent from the US.
The US issued the first postage stamps in 1847.
No, you must use US postage stamps.