If you have online Banking, then the AIB website will allow you to do if for free, if you send the Euro Equivalent. If you wish to send it in Sterling then it costs E12.50 to do it on-line as an International Transfer. There is a Max of E5000 that can be x-ferred daily, though I think BOI allows a daily Max of E20,000.
To send the Full Amount go to your Branch, where the International X-fer will cost you upwards of E20, and can take up to 10 working days to clear in the UK.