Is there really a massive quality difference to justify the price differential? I'm looking at porcelain tiles for my new kitchen, and either porcelain or marble for a new ensuite. I've just popped into Topps Tiles as I was passing and they had some lovely stuff at very reasonable prices. What am I missing? Have I been sucked in? Have any of you lovely wise Mumsnetters had experience of either high end or high street tiles? Thanks all.