BookRiot: “…For those unaware of how bestseller lists work, here’s a primer. They each use different metrics and data sources, but the NYT is considered to be the most “curated,” with a secretive process. It is known that they poll a large selection of independent booksellers and major retailers. These are often called “reporting” bookstores. Those looking to game the system with bulk sales will only order from sources known or highly suspected to be reporting. The general wisdom is that you need to sell somewhere between 5,000 and 10,000 copies a week to make most of their lists. The NYT list is usually seen as the most prestigious, with the Wall Street Journal’s list being highly respected in business circles. The USA Today list is broader, with no category breakdowns—just a simple list of the top 150 books that week in print and electronic formats. These are considered “easier” to hit than the NYT list. You’ll most often seen folks touting an “Amazon bestseller” label, or sometimes they’ll simply say “bestseller.” Marketer Brent Underwood blew the lid off these claims with a charming experiment and article in 2016. I myself am a #1 Amazon bestseller in “Teen & Young Adult LGBT Fiction,” but I don’t advertise that…”