Hi Nell
Iam an interior Designer...I go to Windsor tiles off the Kylemore road for all my clients...the place is a bit like a warehouse but if you walk around a few times you will find something good.they also have loads of tiles in stock..The tiles they have are mostly good quailty ,I would be weary of buying tiles too cheap because you need to look at them for a long time
Dont be afaid to ask them for a discount also..... ask for James tell him Yvonne sent you. good luck