The cost of a sunset lamp can vary depending on a number of factors, such as the size, features, and brand of the lamp. In general, you can expect to pay anywhere from $20 to $100 or more for a sunset lamp. Some cheaper options may be available for under $20, while more expensive lamps may include additional features or be made with higher-quality materials. It’s a good idea to compare prices and read customer reviews before making a purchase to ensure you are getting a good value for your money.