No. The installed cost of a tiled roof has not increased during the last few years. As a rule - concrete tiles cost much less than slate and clay roof tiles cost slightly more than concrete.
Clay and concrete tiled roofs last longer than any other known roofing material. You will find most manufacturers offering a warranty of 50 years, as they are capable of withstanding severe and extreme weather conditions. Clay and concrete roof tiles not only improve the look of any building, but also increase the value of any