The word "art valued at" can be replaced with its antonyms to convey a different meaning. Some of the antonyms for this phrase are "worthless," "unvalued," "invaluable," "priceless," "unimportant," and "cheap." Using any of these antonyms changes the tone and perception of the sentence. For example, if you say "the art was worthless," you are implying that the art holds no significance or value. Alternatively, if you say "the art was priceless," you are conveying that the art is extremely valuable and cannot be assessed in terms of money. The use of antonyms can add depth and nuance to language and writing.