If you're in Dublin, I would checkout www.pixels.ie on liffey st. and www.cameracentre.ie on grafton st. In some cases, prices are v.close to the web (especially if you add in delivery), you get to hold and feel the camera before you buy, you don't have to worry about delivery being delayed and any problems/returns are easier to deal with. (A happy customer of both shops).
are better value and should be able to deliver within two weeks. Check out the many excellent digital camera review sites (see relevant threads on AAM) before buying.