If you want to sell prints, join Fine Art America - test it out first with a free acount, then go pro. You easily recoup the cost of a pro account with your sales, and you have a bunch of bells and whistles also, such as a embeddable web store, even a own customizable website. Their SEO is the best ever, you land on top of Google in no time. Simultaneously, you would also be on their sister site, Pixels. Check out my store on Pixels here: https://otto-rapp.pixels.com/ - I customized it.