How much is it to install travertine tile?

Do-it-yourself installation can be challenging. In addition to the cost of the tiles, grout, thinset (adhesive mortar), sealant and other supplies bring the cost to $2.50-$5 a square foot for basic travertine tile, or $250-$500 for 10'x10' and $3,750-$7,500 for 1,500 square feet.