Monoprice.com accepts a variety of payment methods to accommodate the needs of their customers. Typically, major credit cards such as Visa, MasterCard, American Express, and Discover are accepted. In addition to credit cards, Monoprice often allows customers to use PayPal as a payment option, providing added convenience and security for online transactions. It is also possible that Monoprice may have options for purchasing through other methods such as gift cards or other digital wallets, depending on the current offerings available on their website. For the most accurate and up-to-date information regarding accepted payment methods, it is advisable to check the payment section on the Monoprice website.