I've noticed a couple of other people doing it. You can do it on other days too, but I like doing it on the first day because they sell so quickly. Like, by the time I'm done listing them all, six of the nine will be sold already.
I do love the art in the game. That's part of the reason I want to play. Any income is good enough for me. I've been making a lot of my gold just from the stuff I get in the Daily Chance and Dumpster Dive. It's surprising how much that stuff adds up.