"Marsback" is a company that produces gaming peripherals such as keyboards and mice. However, customer reviews on Trustpilot show mixed experiences. Some customers report receiving their orders and being satisfied with the products, while others claim they have been scammed, citing lack of customer service and unfulfilled orders. It's important to exercise caution and do thorough research before making a purchase from any online retailer. Reviews for specific Marsback products like the M1 Keyboard and Zephyr Pro Gaming Mouse can be found on GameRevolution and How-To Geek respectively, providing more insight into the quality of Marsback's products. Please note that this information is based on available online resources and may not be fully up-to-date or comprehensive.