Tried to pre-order JK Rowlings forthcoming The Silkworm on Amazon, only to find that no such option exists? The title is one of several victims of the companys very public spat with publishers Hachette, which Amazon is holding to ransom for cheaper pricing on e-books. Until now, however, the company remained tight-lipped on the tactic, but in a blog post, admitted that it was playing hardball with its rival.