first you get a stamp at the post office and ask how many you need you buy them, stamp them then in the middle of the package you put the address i the top left you put your address and then you send it to Ireland by the post office which you will havde to p[ay around $10.00 t osend it there.
It did cost $1.10 to mail a postcard in the US in 2003.
It only takes a single stamp. But it does have to be the correct denomination. Currently the rate for one ounce from the US to Ireland is 98 cents for a postcard or the first ounce of mail.
32.00
800 squid
postage for a postcard sent from Australia to the U.S. costs AU$1.40.
To mail a first class international postcard to Canada, you will need to attach $1.10 in postage. The maximum size for a postcard is 6" in length x 4.25" in height.
Get a first class stamp
A postcard is a cheap way to do this.
In 1955 it cost $.02 cents to mail a postcard. As of 2014, the cost to mail a postcard is $.03 cents.
The postage rate for a standard postcard in the US is 32 cents.
3 x 4 inches
98 cents