Yes, with the popularity of Private Label Rights Content, often, you might have 10 people selling the exact same ebook under different websites, brand names, book titles, etc.
That's one of the problems with PLR.
Usually, the terms of the PLR rights will specify that you cannot claim copyright to the ebook product,
unless "significant" additions or changes have been made. Punters have disagreed on what "significant" means, but some suggest anything where 50% to 70% of the content was added in, rewritten, or modified.
As a real life experience, even printed books by pretty famous authors are sometimes (maybe more frequently than we think) marketed like they were different products. One time I bought a Dee*pak Cho*pra book in the bookstore but later realized that I had the same book at home. Only difference was: The title was different....
....... go figure eh?
Fortunately, I managed to get my money back ..
:ebay: