Which term best describes a situation with many get-rich-quick books online?

The term that best describes a situation with many get-rich-quick books available online is abundance. This concept refers to a large quantity or multitude of something present in the market. In this case, the numerous get-rich-quick books indicate that there is a wide variety of options available for consumers seeking quick financial success.

The presence of many such books suggests a saturation of the market with similar content, making it evident that the subject is heavily covered and easily accessible. Abundance also implies that potential readers have the freedom to choose from numerous sources, reflecting a marketplace rich with information, albeit the quality of that information may vary.

Scarcity would indicate a lack of availability, which does not apply when there are so many options. Imbalance refers to a disproportion, which is not relevant in this context since there is no indication that the number of books leads to a lack of alternatives. Quality speaks to the value or effectiveness of the books, but in this scenario, the focus is on their sheer quantity rather than their merit. Hence, abundance is the most fitting description of this situation.