I am surprised no one has replied to this. Not Ovacik but, So here goes.
I recommend Yenigler (probably spelt wrong) it is the DIY shop on the Fethiye to Gunlukbasi road, after Kipa through the traffic light and through the next set, the shop is on the left hand side, speak to the manager Celal, they have done tiling for us and will be next week, we have always been pleased with the work and price, that is why we keep returning.