Merch by Amazon

Merch by Amazon is an invite-only print-on-demand program that allows you to sell your designs directly on Amazon. Because it is integrated into the world's largest e-commerce marketplace, it offers unparalleled access to millions of customers. However, the program is highly competitive and requires an application to join. Once accepted, you can upload your designs and Amazon handles the printing, shipping, and customer service.

It is a powerful tool for those who can get in, but the lack of control and the difficulty of getting accepted make it a challenging platform for most.