How much are I.costello paintings worth?

The value of I. Costello paintings can vary significantly based on factors such as the artist's reputation, the artwork's size, medium, and provenance. On average, prices can range from a few hundred to several thousand dollars, with more notable pieces potentially fetching higher amounts at auction or through galleries. For an accurate assessment, it's best to consult art appraisers or auction houses specializing in contemporary art.