In a recent article for Home Improvement Pages, Rob Schneider looks at why one quote for laying tiles can differ dramatically from another. He says it is all in the detail. When you ask for a detailed quote, you may find that the cheaper quote does not include:
Schneider recommends asking your preferred tiler for references and evidence of their work, which they should be happy and able to provide if they have been in the profession locally for any length of time. He also recommends asking for a quote for the entire job, rather than a price per square metre, as this will tell you how much you will be up for in total.