Bestsellers are usually separated into
fiction and
non-fiction categories. Different list compilers have created a number of other subcategories.
The New York Times was reported to have started its "Children's Books" section in 2001 just to move the
Harry Potter books out of the No. 1, 2, and 3 positions on their fiction chart, which the then three-book series had monopolized for over a year. Bestsellers also may be ranked separately for
hardcover and
paperback editions. Typically, a hardcover edition appears first, followed in months or years by the much less expensive paperback version. Hardcover bestseller status may hasten the paperback release of the same, or slow the release, if hardcover sales are brisk enough. Some lists even have a third category,
trade paperback bestsellers. In the
United Kingdom, a hardcover book could be considered a "bestseller" with sales ranging from 4,000 to 25,000 copies per week, and in
Canada, bestsellers are determined according to weekly rankings in the country's national print sales tracking service,
BNC SalesData. There are many "bestseller lists" that display anywhere from 10 to 150 titles.
Differences among lists Bestseller lists may vary widely, depending on the method used for calculating sales. The
Indie bestseller lists, for example, use only sales numbers, provided by independently owned (non-chain) bookstores, while
The New York Times list includes both wholesale and retail sales from a variety of sources. A book that sells well in gift shops and grocery stores may hit a
New York Times list without ever appearing on an Indie list.
USA Today has only one list, not hardcover/paperback, so that relative sales of these categories cannot be ascertained from it. Lists from
Amazon.com, the dominant online book retailer, are based only on sales from their own Web site, and are updated on an hourly basis. Wholesale sales figures are not factored into Amazon's calculations. Numerous Web sites offer advice for authors about a temporary method to boost their book higher on Amazon's list using carefully timed buying campaigns that take advantage of the frequent adjustments to rankings. For example,
faith healing author
Zhi Gang Sha has used this method to create a number of #1 bestsellers. The brief sales spike allows authors to tout that their book was an "Amazon.com top 100 seller" in marketing materials for books that actually have relatively low sales. Eventually book buyers may begin to recognize the relative differences among lists and settle upon which lists they will consult to determine their purchases. The weight and price of a book may affect its positioning on lists. The Amazon.com list tends to favor
hardcover, more expensive books, where the shipping charge is a smaller percentage of the overall purchase price or is sometimes free, and which tend to be more deeply discounted than paperbacks. Inexpensive
mass market paperbacks tend to do better on
The New York Times list than on Amazon's. Indie and
Publishers Weekly separate mass market paperbacks onto their own list. Category structure affects the positioning of a book in other ways. A book that might be buried on the Indie hardcover fiction list could be positioned very well on
The New York Times hardcover advice list or the
Publishers Weekly religion hardcover list.
Verifiability Bestseller reports from companies such as Amazon.com, which appear to be based strictly on auditable sales to the public, may be at odds with bestseller lists compiled from more casual data, such as
The New York Times lists'
survey of
retailers and publishers. The exact method for ranking
The New York Times bestseller lists is a closely guarded secret. This situation suggests a similar one in the area of
popular music. In 1991,
Billboard magazine switched its
chart data from manual reports filed by stores, to automated
cash register data collected by a service called
SoundScan. The conversion saw a dramatic shake-up in chart content from one week to the next. Today, many lists come from automated sources. Booksellers may use their
POS (point-of-sale) systems to report automatically to Book Sense. Wholesalers such as the giant
Ingram Content Group have bestseller calculations similar to Amazon's, but they are available only to subscribing retailers.
Barnes & Noble and other large retail chains collect sales data from retail outlets and their Web sites to build their own bestseller lists.
Nielsen BookScan U.S. is perhaps the most aggressive attempt to produce a completely automatic and trusted set of bestseller lists. They claim to be gathering data directly from cash registers at more than 4,500 retail locations, including
independent bookstores, large chains such as
Barnes & Noble,
Powell's Books, and
Borders (formerly), and the general retailer
Costco. Unlike the consumer-oriented lists, BookScan's data is extremely detailed and quite expensive. Subscriptions to BookScan cost up to $75,000 per year, but it can provide publishers and wholesalers with an accurate picture of book sales with regional and other statistical analyses.
The making of a bestseller Ultimately, having a great number of buyers creates a bestseller; however, there is a distinct "making of" process that determines which books have the potential to achieve that status. Not all publishers rely on, nor strive for, bestsellers, as the survival of
small presses indicates. Large publishing houses, on the other hand, are like major record labels and film studios, and require consistent high returns to maintain their large overhead. Thus, the stakes are high. It is estimated that 200,000 new books are published each year in the U.S., and less than 1% achieve bestseller status. Along the way, major players act as gatekeepers and enablers, including literary agents, editors, publishing houses, booksellers, and the media (particularly, publishers of book reviews and bestseller lists). While literature awards have a beneficial effect at least on sales of hard covers, The high visibility of an established and best-selling author is paramount in the equation also. In addition to writing the book, an author has to acquire representation and negotiate this publishing chain. At least one scientific approach to creating bestsellers has been devised. In 2004,
Didier Sornette, a
professor of
geophysics and a
complex systems theorist at
UCLA, using Amazon.com sales data, created a mathematical model for predicting bestseller potential based on very early sales results. This information could be used to identify a potential for bestseller status and recommend fine tuned
advertising and
publicity efforts accordingly. In 1995, the authors of a book called
The Discipline of Market Leaders colluded to manipulate their book onto the best seller charts. The authors allegedly purchased over 10,000 copies of their own book in small and strategically placed orders at bookstores whose sales are reported to Bookscan. Because of the ancillary benefits of making
The New York Times Best Seller list (speaking engagements, more book deals, and consulting), the authors felt that buying their own work was an investment that would pay for itself. The book climbed to #8 on the list where it sat for 15 weeks, also peaking at #1 on the
BusinessWeek best seller list. Since such lists hold the power of
cumulative advantage, chart success often begets more chart success. And although such efforts are not illegal, they are considered highly unethical by publishers. From what is described above, intrinsic properties of books (like style or content) are often ignored or even deemed as irrelevant for their success by consumer psychologists, literary scholars, economists and sociologists alike. The success of novels is instead said to be made by extrinsic factors like literary critics, publishers, media, conformity and other social influences. However, an elaborated model examining over a dozen external variables potentially influencing books sales could only explain less than 40% of differences in sales. Research found intrinsic properties of novels which do influence their success. For example, a smaller disparity between the frequency of emotional words and rational words was predictive for successful novels.
Unread bestsellers Bestsellers have gained such great popularity that it has sometimes become fashionable to purchase them. Critics have pointed out that just because a book is purchased doesn't mean it will be read. The rising length of bestsellers may mean that more of them are simply becoming bookshelf decor. In 1985 members of the staff of
The New Republic placed coupons redeemable for $5 cash inside 70 books that were selling well, and none of them were sent in. ==Major publishers==