How to Why is pottery so expensive? 5 most expensive vases in the world. ByBayofClay Admin December 4, 2020April 10, 2021 Have you ever walked into a nice shop or cool studio, picked a nice vase thinking what flowers will match the decorations? But all of a sudden you are surprised with the price. If it is just a piece of ceramics, why does it have to be so expensive?