While I was trying to arrange to order a doll during it's open period on the site someone asked me this, and I couldn't really answer besides the molds probably eventually wear out? It's true that designing a doll takes a lot of work, but after getting say, a quantity of orders and corresponding payment, sending that number of orders and payment off to a caster, shouldn't the orders of that sculpt be available like in a monthly ordering period until the cast wears out? And even then, a new cast of that sculpt can possibly be made from the artist's prototype. I'm assuming sanding and assembling are also covered in the price, and I know small studios are in a different position when handling a large amount of orders compared to a large company, but I'm talking about companies with many employees. The only reason I can think of is 1) the artist/company just wants to make a new doll, 2) it's to drive up demand to emphasize the brand of hand crafted eliteness, 3) they legitimately can't handle the amount of orders that would come in on a regular monthly basis. Any thoughts? This is just my best guess, and I would like to be able to explain this to people not in the hobby.