Calling a cell phone in Ireland

My brother is in Ireland for the year. What is the cheapest way to call his cell phone there? It starts with 87 if that makes a difference. i already looked a skype and it's 20 cents a minute. Anyway to go cheaper or is that the best I'm going to get?

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If you use jaxtr, you can call a landline phone at $.02/min or a mobile phone for $.16/min (which I believe is applicable to what you want to do). Jaxtr also offers free sms. Sign up is free. 

The technology jaxtr is using is mobile voip, so it's cheaper because it routes calls through the voip system. At the same time, once you set it up, you can call your brother directly from your mobile or landline phone and don't have to be at a computer to make these calls.

http://www.jaxtr.com/user/rates.jsp

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If i call somebody in America its like 50 cents for a text instead of 25 and its 60 cents a minute instead of 30 when i call, so its double the price basically, so skype would probably be the cheapest your going to get.

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put 00353 before it and if you can get an 87(vodafone) aswell yourself and ye can set up a package where you can ring eachother for less and txt for free.