"At premium" is a phrase that suggests a high cost or value for something. Antonyms for "at premium" could include "affordable," "cheap," "inexpensive," and "reasonable." These words indicate a lower cost or value for something. Other possible antonyms include "common," "ordinary," and "standard," as these words imply that something is not particularly valuable or noteworthy. When seeking out alternatives to "at premium," it's important to consider the context and the intended tone of the message. Choosing the appropriate antonym can help to convey a clear and specific message to the reader or listener.