Since we started PublishersMarketplace.com over 13 years ago, one of our core features has been the Book Tracker. Originally designed follow Amazon and BN sales rank for lists of individual ISBNs (with stored histories), the Tracker has expanded over the years to contain all kinds of ISBN-related information, along with automatic tracking to check sales rank twice a day. User suggestions have helped drive some of the expansion, with Amazon price change tracking added when ebook prices were in regular flux. Now, at the prompt of literary agent Ted Weinstein, we have added another twist, automatically monitoring Amazon in-stock availability […]
