Once upon a time I published a book via what you could call a vanity publisher. I paid money for the full process including book design etc. The ISBN is in their name. I was delighted by the high standard of the finished product, but not at all happy with the price they sold it at. I was an unknown author/first book - yet readers were expected to pay more for my book than from someone with a known reputation. I have also had to beg for royalty payments - now overdue.
I have now written a sequel as part of a series and want to recover my book back. I have purchased my own ISBN's and want to revert this book into something I fully own. Despite them sending me the final PDF - I also retained the final Word doc and I have the book design. It wouldn't take much for me to write a 2nd edition & upload on Clearspace, but not sure if this breaks some rules. Has anyone done this before or been in a similar situation?