Don't have a dog in the fight.
The mass-produced refrigerator explanation doesn't work. And even that can have a back order of several months. Custom work is different. Custom and mass-production are not comparable.
The business practice that somebody else explained is great. But, not every artist is good at business. Which leaves the question. Which is more valuable to the customer, business method, or the art?
Last, but not least. Aren't they just pants? There are...