I want to get this case for my iPhone, http://store.apple.com/ca/product/TX758ZM/A?fnode=MTY1NDA0NA&mco=MTUzNjYzMjY, however when I go to the Apple store (in store) they don't have it on the shelf. Can I ask an employee to check the back, or do they not have it all instore? Thnx for answers! 😎