Abstract: Systems and methods including one or more processors and one or more non-transitory computer readable media storing computing instructions that, when executed on the one or more processors, cause the one or more processors to perform: receiving historical marketplace information corresponding to one or more categories, wherein the historical marketplace information is for a merchant in a marketplace; determining a respective anchor for each of the one or more categories of the historical marketplace information; receiving an observed price for an item in the marketplace, wherein the observed price corresponds to an item in the one or more categories; normalizing the anchors for each of the one or more categories based on the observed price and the historical marketplace information; determining if the observed price is an anomaly based on the anchors, as normalized; and transmitting an alert to the merchant in the marketplace when an anomaly is detected. Other embodiments are disclosed.