Don't know that is your funnel and if you use SEO, social media or other stuff but a "good product" to sell can also depend on the platform that you are using.
SEO/organic traffic is good for every niche obviously, but for example if you use Pinterest the demographic is more specific and some offers will have shit conversion rates, but others (for example home decor, products specifically geared for women as a high amount of Pinterest users are women and also Crafts/DIY products like the ones you find on Etsy and also digital downloads, that I guess is the thing that might be more interesting for you) can be more successful than on other platforms.