Hello! I don't know that website but for me art is a special, it's something you can't choose online. I have to see it in front of my eyes to fall in love with a work of art
I know 1stdibs too and I think it's a great idea because some people can be stopped in their will of buying art with all the "protocol" coming with it.
Now you are just at one click away from beautiful piece of arts, so it's much easier!