How can you determine when you know you got value out of an eBook? I have purchased an eBook for $10 dollars and there was only 25 pages, and on each page there was less than half of it used for actually works. The last 10 pages were literally list of links to other sources that had nothing to do with the eBook. I also purchased an eBook for $5 dollars and it had over 40 pages filled with content. How do you determine whether it was worth it or not?