One of the most profitable PLR products are E-books. In the past, marketers purchased resell rights from an e-book author to then resell the e-book material as it is. This works to the benefit of the authors, because their work can be sold with the content intact, and not being compromised. Many of these e-books contain links to products that the author has interest in. Either because they are created by the author, or because they are affiliate links which earn commissions for the author. The result is that the seller of the e-book will double as the author's marketing agent, because with each sale of the book, the affiliate links that the ebook contain are exposed to more customers which the author may not have been able to aquire.
Recently, however, a new kind of resell rights have become increasingly popular among marketers. They not only purchase the rights to sell the book, they also obtain the rights to do whatever they want with it, then sell it. Essentially, they edit, modify, rearrange, or change the contents of the books to suit their needs without being held liable. This allows the reseller to create new and unique products from the material which is specially designed to suit the customers of the reseller.
Usually, the e-books that are being resold under Private Label Rights are specially commissioned and have ghostwriters as authors. These works are usually basic texts that are geared to a specific market. However they are not usually the type that will win literary awards or climb bestseller lists. But it does not mean that these books are not without value. Actually, they fill the need of niche markets because they are written specifically for them. A lot profit can be made if the reseller manages to aim it at the correct target market.