I want to order two new books. They would be sent to a Texas address and brought in by someone who regularly brings in our mail (I teach at a school with many Americans). I have done this many times with used books and have never been charged any import fee (including a huge box full of used books), but never with new books. Do you think there would be an additional charge? One is a teacher-resource book, and another a cookbook. Would they bother putting a tax on those?