Travertine

Lots of great advice here! We have plans installing 2,000 sq f of Travertine in living areas incl. a kitchen, and I am starting to wonder whether it is such a good idea? We purchased Turkish Umbria Saveria tile from a store that turned out to not be of good quality consisting of mostly fillings...who knew. It has been returned. How does one guarantee a good quality load of this quantity? Is the general rule that you get what you pay for? If so, how much should one expect to pay for good quality Travertine? Should we rethink our decision and go for different flooring material? Look forward to hearing back. Kind regards, Mia