Normally a mint, unused stamp is worth more than a canceled one.
There are exceptions to this:
For a canceled stamp to have more value than a mint one, it should still be on the envelope.
Some countries have issued large quantities of stamps for sale to the collectors' market and were never intended for postal use. Finding these actually used for postage is good. And example is Tonga, which issued many unusually shaped stamps.
Special cancellations can have value. Examples are First Day of Issue, special events or locations and dates of historically significant events.
Older stamps with rare cancellations or from small town that only existed for a few years a century ago can have value to postal history collectors.
It is not as signficant as other factors such as the number of copies in circulation, demand, and any versions of the stamp with errors.
Face value of the original stamp was $0.20
Barely, probably the face value of the stamp.
This stamp is worth a price ranging from $1 to $5. The exact price will depend upon the condition of the stamp.
In Great Britain it was 41 pence.
According to the website United States Non-denominated Stamp Values, the face value is 37 cents.
The price of a stamp went from 15 to 18 cents. So the face value of the B stamp is 18 cents. The B make up stamp would be worth 3 cents.
You will need to more clearly identify the stamp to determine the value. There are a number of variations. In general, they will have minimal value. Consult a stamp catalog to identify it.
4cents
$149.99 the price for a new original ps2 is now $99.99 and it will be about 7000 to 10000
The price of one US postage stamp sufficient to mail a one ounce letter to any destination within the US is $0.44. That price is likely to increase soon. Note also that there are a great variety of US postage stamps available for various purposes. You can buy a single stamp with a value of $0.01, but you can also but a single stamp with a value of $7.80, $10.00, even more.
Whatever the first class postage is. Today it is 49 cents
Not sure what you define as an original stamp. A US 3 cent unused stamp is worth 3 cents toward postage. It may have more value as a collectible, but you would have to consult a stamp catalog to fully identify it and get an estimated value. You might try the online version at Mystic Stamps as a starting point.