Nice work, James. It'll be of huge help to the Seblod newcomers. I'd suggest you turn it into a multimedia eBook, e.g. to embed the videos you've created (or create new ones that are perfectly aligned with the steps outlined in your book and use similar content so the readers can watch the video and then use the written steps to complete their scenarios).
I'm looking forward to reading about the more advanced functionalities, e.g. email notifications, templating, comments extensions w/ pagination, # of comments listed in the Intro view, etc.
In first of all many thanks for your efforts and good work, I downloaded your eBook.
Answering you about your question "How much would you be willing to pay for a full "Learn Seblod" Ebook that contains everything I know about making websites with Joomla and Seblod?" : I think my opinion is too clear and I wrote it here in Paid Support and Seblod Pro topic. The eBook is the problem, not money (we are speaking about 10/30 $!). Money can be one way to solve the problem.
Then, I'm totally agree with MtnPavlas, I think also would be a good idea to have an online multimedia eBook always updated and logically built with Seblod :D that can be downloaded as pdf, so for example we can import that on our Google play book and bring it always with us.
Sure the advantages to have an "online" is that all times you solve a dubt you can clarify it in real time on the eBook and If you can answer to a question you can add it in real time.
In relation to the work you've already done (eBook and Video Tutorials), I have yet few requests for you:
2 How to add a downloadable file as an attachment to an Article Seblod ? May be is it better leave unmodified the default Seblod Article, copy it like "Seblod Article download" and then add needed modifications ? Or, is it better to use a wysiwyg "pro" features like JCE ?