Tundra is a free online marketplace where you can sell wholesale. There is not a category specific for artists, however, you could add your storefrom to the home decor category. Setting up is easy, open a storefront and list your items. You can also import your listings if you have a shopify store. Receive order and get paid within 2 days of shipping. You will receive prepaid labels for shipping.
The platform is free to use; however, they make their money by selling you ads.