It will cost you 98 cents for an ordinary up to 1-ounce letter.
44 cents
Florida is in the US...
21p
Postage to Europe from the US is 98 cents for a one-ounce letter.
This depends on where you are mailing the letter from, and the dimensions and weight of the letter.
See: USPO website.
96 cents.
$1
For a first class letter of one ounce to another US destination, it takes 44 cents of postage.
96 cents
Do you mean Colombia? If so, the answer is $0.98.
99 cents in a standard envelope.