While often seen referred to as a Pyrex seasonal promo from 1973, the Salton Cosmopolitan H109-C Hot Casserole Set was one of several items in that company's "Cosmopolitan" range of electric warmer food and beverage serving units, the casserole being merely an outsourced component. Suggested retail then was $19.95, which is about what I paid total for the dish and warmer from a thrift and eBay. Cha-ching!