I have seen mention of wholesale butcher outlets in threads here before and I have to say I love a bargain and it encouraged me to think beyond supermarkets - though the locations were not always the easiest to get to without a car. Anyhow I haven't seen mention on the board of the newly opened one in Coolmine, beside the new Baby Elegance shop/Atlas tyres shop, facing the gaelscoil.
http://www.dublinmeatcompany.com/
I was in there today and the quality and value seem great, not to mention the lads there were genuinely nice. My kid left with a lollipop and the other customer in there at the time departed with a large bag of bones for her dogs. Cooked one purchase tonight and we're impressed with the quality. Tomorrow I'll see how the steaks hold up

Edit: Just to add its irish farmed - which is a big influencing factor for me as much as price is.