Set of 4 for $68?

Someone at an antique mall is selling a set of 4 of these bowls for 68 dollars. I know they are spicy but I'm not sure the seller knows this. Any other reason they would be so expensive?

Someone at an antique mall is selling a set of 4 of these bowls for 68 dollars. I know they are spicy but I'm not sure the seller knows this. Any other reason they would be so expensive?