Clearly, there's a lot of demand on Amazon, and if any product is going to sell, it's going to sell well on Amazon. But the goal here is to source the right products that will easily sell at the world's largest online retailer. Generally, products between $10 and $50 sell very well here. Just be sure to do the right market research before jumping on this bandwagon.
Shopify is probably the most popular e-commerce solutions provider out there, but because there are so many products and options, newcomers can easily get confused. If you believe your audience has products to sell and could benefit from Shopify’s products and are able to elucidate the benefits of signing up for Shopify, you can definitely earn some big money with their affiliate program.