From the looks of it, this site hasn't done much in the way of actual business. A handful of transactions 180 days ago, probably the original pieces being loaded up, and then crickets. https://etherscan.io/address/0xc40cf3abc0166847c16f1f60f3fdf... Monograph is a fantastic blockchain art registry, made by Chris Tse, the founder of Cardstack. There are several others that actually demonstrate some of the more novel aspects of this particular use case. https://monegraph.com