In the adult products market, life size sex doll has gradually become the focus of consumers' attention due to their highly realistic appearance and touch. However, the prices of sex dolls vary greatly, ranging from "cheap models" of a few hundred dollars to "expensive models" of thousands or even tens of thousands of dollars. When choosing sex dolls, consumers often face a question: should they choose cheap sex dolls or expensive sex dolls? This question not only involves economic costs, but is also closely related to the quality, user experience, durability and psychological needs of the dolls. This article will explore how to make a reasonable choice between cheap and expensive sex dolls from multiple perspectives.