Currently, you cannot sell books made with Blurb's mobile app. It is not possible to add a markup for profit or distribution. You can share your book from the mobile app and from your Blurb website dashboard. This is how friends, family, and fans can buy a copy.
Can I sell or distribute books made with Blurb's mobile app?
Books made with Blurb's mobile app are not eligible for profit selling, warehousing and shipping through Blurb. Books from the mobile app are also ineligible for distribution through Amazon.com or Ingram.