Original sentence: It is unusual for major book stores to stock many self-published titles, often because many self-published works do not meet the publishing standards opf the major chains, or their appeal is either to a limited audience, or do not have effective access to the marketing and distribution channels available to mainstream publishers.The term is a usually derogatory reference to what the book trade calls 'vanity presses', which, for a sum of money, will help unpublished writers print, bind, and distribute their own works
Edited sentence: Few book stores stock self-published titles.This is a usually derogatory reference to what the book trade calls 'vanity presses' which, for a sum of money, will help unpublished writers print, bind, and distribute their works.This is because:.many self-published works are of poor quality, and.those that are of high quality either appeal to a limited audience, or do not have effective access to the marketing and distribution channels available to mainstream publishers