Shelf label in Tesco Mahon €3 for 6x Howling Gale Ale. Unfortunately none on the shelf...
Went to Dunnes and it was 5 for €8, not marked on the shelves though.
So €1.60 per bottle in Dunnes & €1.83 in Tesco. Not a huge saving, but it's nice to support Irish Beers when they're on a push, or any time for that matter!