Think most of us who have gone to Ireland whether it be in Northern or Southern parts have gone on packages, which is the best way to go. That way we would be getting better rates. I would venture to say that going the way you are would most likely be expensive unless the pro at your club might have a contact in that area. Like being a daily rate at Pebble Beach or The Ocean Course at Kiawah. Which can run over $600 here in the states.

Any of the most popular and historic will set you back but the way I see it, it’s a memory that will last much longer than the money I would eventually spend on food, gas, etc. I guess you are going to be in Dublin? If so, a day trip to Portmarnock, The Island GC, Royal Dublin, County Louth, or The European Club would be my suggestions. Those are all Links style courses which are what most travelers to Ireland or Scotland want to play. There are some good Parkland style courses but you won’t get that unique feel you are probably looking to have.

I realize the green fees can be rather steep but when you will be there again and how often do you get to play great courses?
Since it is a business trip, Most of your trip to Dublin is already paid for!!
My suggestions, mirror Dale's. Porrtmornock, County Louth and The Island course.

Truly memorable golf and "wont break the bank" don't usually go hand in hand.

Unless you're willing to pay 200 euro+, you won't be playing any of the world top 200. That being said....there is a really great option just a few minutes north of Dublin called Corballis Links. 35 Euro on the weekend, 30 on weekdays. Gives you that 'playing in amongst the dunes' that places like Carne and Ballybunion are so famous for, but without the 4 hour drive for Carne and the pricey tee time for Ballybunion. Give it a look!

Where are you going to be based? Tom Coyne's a course called Ireland should give you some inspiration. Heading over west you could take in some terrific courses as well as sampling some of the best of Ireland's hospitality. Dooks and Lahinch two to look out for.