Marshall is a well-known brand that makes a variety of audio equipment, including speakers. The cost of a Marshall speaker can vary widely depending on the specific model and its features. For example, a portable Bluetooth speaker from Marshall might cost a few hundred dollars, while a high-end home theater speaker system could cost several thousand dollars. It’s best to check the manufacturer’s website or a retail website for the most up-to-date pricing information on the specific model that you’re interested in.