This tile is very nice quality and looks great.  Just order more. Our project room measured exactly 40 sq. ft. So with small tiles no corners to go around etc I ordered 40 sq. ft.
 In fact the 40 sq. ft is really just over 38 sq. feet.  so order more than what you need.  
Wayfair did give a good price on the extra that I had to order to finish, but the job was held up waiting for the tile.
Great product just order more than you need.