€16-€17 per sq yard is about average but it does depend on the type of tiles being laid - ie marble & slate are more expensive - this is because they are natural & are not identical in nature and so have different height/thickness thus making the fitting more time consuming. What way did your tiler actually quote - I wouldn't imagine he quoted an odd figure of €25.67 - does this figure incl. grout, trims, etc and what size area is it. If it is a small job and involves a lot of cutting ie around toilet, sink, windows, etc there could be an additional charge.