$1.36
60c-90c
At the current time, March 2013, it costs €0.82 to send a normal letter from Ireland to Canada.
€2
The cost of air mailing a letter from Australia to Ireland is $2.60. A registered letter is about $22.00. It takes three to ten days for the transit.
1 ounce - a card or 4 page letter = .90 cents
No.
That depends on where you are sending it from, which you have not stated. If you go to your local post office they will give you the current prices.
There are various prices for stamps in Ireland. To send a letter in Ireland to other parts of Ireland, the price is 55 cent.
700 Stamps
3 stamps!
An ounce of International First Class mail is 98 cents.
For a standard letter it is €0.82 although if you want to send something larger the costs would of course increase.