It depends whether the stamp is new or used, old, rare, scarce or with a mistake. Most used stamps are usually only worth a few cents. New stamps are worth at their face value. The old, rare scarce or stamps with a mistake can be worth from pennies to 100's, 1000's, to possibly a million dollars.
Stamp lengths vary depending on which stamp you have. The one I have here which is the typical U.S. size is 2 3/10cm (width) x 2 5/10 cm (length).
it can weigh up to one ounce using one stamp
The value of one Anna red stamp is 20 cents. It is much higher on Ebay.
One stamp will cost 46 cents. A book of 20 stamps will cost $9.20. There was not information about a "pele stamp."
A first class stamp covers up to one ounce of postage.
It depends on the weight of the package or envelope. Letters weighing one ounce or less require a 49 cent stamp called a "forever" stamp.
A fingernail weighs about as much as a postage stamp. A postage stamp weighs about one gram. It would take about 28 fingernails to equal one ounce or about 450 for a pound.
There is no such animal. The Franklin stamp of that era was a one cent stamp.
One ounce
A Canadian stamp in 1958 sold for 5 cents. (I checked eBay to make sure!)
It is worth the cost of the stamp.
1c 1 cent
how much did a postage stamp cost in 2016