I look forward to hearing your responses on this topic. how are the book formats that you have purchased? Did some of the pages break to the next page too soon? Was it missing a page break before a chapter? Did you read a book that should have had pictures but had none?
Depending on the format, when I upload books from my documents they are transferred into the ebook that you can buy online. The first time I did this I realized a few things like you cannot use a page break to make a page break but I have to use a heading format.
It is important to me that I hear from you on this and I hope everyone is having a great week!