Some publishers change their contracts overnight.
They'll happily epublish your ebook and take all electronic rights, and then ask customers to send in a check or money order. I guarantee these firms will fail. Most of these firms request their contracts exist for a specific period of time ranging from one to five years or more. However, Booklocker's contract can be terminated immediately on request, which is a helpful alternative for authors who have been contacted by traditional print publishers. We removed her books from the site within hours.