Amazon has a bad policy that is forcing me to go to Half-Price Books. You see, when I want a book, I usually go to Amazon and find it. It is usually available as a used book from a second-hand bookseller for around a dollar. But they charge a $3.99 shipping fee no matter the size of the book or it origin. So my $1 bargain book now costs $5.00. And it doesn't matter if you ship several books from the same bookseller---$3.99 per book.
This is a bad thing - like abrasive parenting and speed bumps and unnecessary zippers - except about books.