Best-sellers are books, products, or items that achieve high sales figures within a specific time frame. They are often ranked on lists published by various organizations, such as The New York Times or Amazon, which track sales data. Best-sellers can vary by genre, including fiction, non-fiction, and self-help, and they often reflect current trends or popular interests. The term "best-seller" can also apply to other markets, such as music, movies, and consumer goods. Items that become best-sellers typically gain significant attention and can influence consumer behavior. Their popularity can lead to increased marketing efforts and further sales opportunities.