why do i feel betrayed by my favorite author

stephen hunter is by far one of my favorite authors for heart-stopping, page-turning suspense and i give every one of his books a 10 except for this one. i was so excited when i saw this new book by my favorite author and paid a pretty penny for it. upon reading the first page I Realized I had already read this book. The Second Saladin what already sitting on my bookshelf !!! only on the inside title page does it say thatthis what Previously called The Second Saladin. how betrayed I felt. Maybe you cant find the original anymore but at least give the new one the same title as before so as to not mislead and in my opinion betray people like me. if the book is by one of my favorite authors and I havent read it --- boom i buy it without reading the back and all the other junk. so i give my first 1 to a book on account of the deceit I felt involved with this book