Kindle Unlimited and the Only Amazon Numbers We Know for Sure.

Amazon is notoriously opaque. It does not reveal the number of devices sold or books sold or movies downloaded. It's hard to measure the success of any one program and the algorithms it uses to construct its bestseller lists are a closely guarded secret. There are those who guess but no one knows anything for certain.

But since the announcement of Kindle Unlimited, Amazon has shared (albeit reluctantly as you will see) actual numbers which show the performance of one of its most recent consumer launches. Kindle Unlimited is a subscription service