I wrote and publish a book through leanpub about Ember.js: ember-cli-101[1]. I started to sell it without finishing it and it was bringing about $500/mo, but no

I wrote and publish a book through leanpub about Ember.js: ember-cli-101[1]. I started to sell it without finishing it and it was bringing about $500/mo, but now that is completed sells are going up. I hope it would be above $2000/mo for the following months. [1] https://leanpub.com/ember-cli-101 https://leanpub.com/ember-cli-101