There have been large public venues of "Virtual Art", mainly works of famous painters, etc, charging admission. They'll never get a penny from me.
There are also many online art "auctions', and EBay itself, trying to sell known prints as commodities. It impossible to assess actual print condition under those auspices, so buyer beware. But most of it is just people showing all kinds of shots, and then adding a provision for having an inkjet print issued, along with a price list.
Another kind of venue would be the showroom model of Peter Lik, for example, whose main gallery in Lahaina (prior to the fire) held big backlit transparencies, which people arriving on the nearby cruise ship dock could order examples of in their own specified size and print medium, whether transparent or conventional inkjet. But that was such PS-tortured tourist trap fare anyway that I doubt the potential crowd had any idea what a well made print would look like. He adapted to photography (if it can even be called that) the factory model of pseudo-paintings of Thomas Kincaid. You order from a showroom, then the finished product gets shipped to you from a centralized plant.
I at least took slides of actual prints, and then scanned them for my website, which was an exceptionally good one for those lower download speed days. Wasn't worth the extra effort. Some of the best prints don't convey well over the web at all, and I quickly learned that web surfers and print buyers are completely different categories of people. In the words of Hannibal Lecter, one covets what they see. All my sales came from people seeing my actual prints in person.