ART STOREFRONTS RECOMMENDATION
Art Storefronts offers several different payment gateway options, but we strongly suggest using Stripe in the beginning because they are the easiest and fastest to set up. You may choose to use another payment gateway, but it may slow down your work flow and cause you to delay launching your Art Storefronts site.
What do I do next?
Now that you can accept payments from people, why not give it a try? A test transaction is a great way to make sure your site is up and running properly and can actually accept payments. To do that you should run a test transaction and for more information on how to do that, check out the article How To: Run a Test Transaction.