This article is a couple of years old, but it's fun to read it from the perspective of pre-war cards verses 2016 cards:
https://www.bloomberg.com/news/artic...ith-art-market
"“If you’re looking for something rational in the art market,” says art adviser Thea Westreich, “go fishing or go do something else instead.” Collectors and dealers have come together to invert the law of supply and demand, making the nearly limitless pool of new works more valuable than rarities. A collector who’s excited about Camille Pissarro, who died in 1903, may only be able to purchase two. A collector excited about Christopher Wool could buy 20."