Last year, it was opal motleys for $1000 ea. (Butter stripes were also the same price last year.)
This year I've seen a couple really high end morphs for $2000 and one I have vague recollections of being $4000, but next year I bet the price drops considerably.
Basically, the only way to sell corns for thousands of dollars is to be a) the first to produce and sell them, and b) well-known enough that people will seek you out to find out what new cool stuff you've got and will be willign to pay $1000 for a snake from you.
Even when lavender motleys were going for $1000 each from one breeder, I saw one or two others who could only get $600 or so each for them.
It is really difficult to get someone to pay $1000 for a cornsnake because by the time said cornsnake is breeding and producing, the price has dropped considerably. People know that if they're just patient for a couple years, they can get the morph for about 1/3 the price it was first offered at, and that's enough to get most people to wait. Plus, if you're the first to buy at that $1000 price, good luck getting your money back if you need to sell those snakes.
-Kat
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"You keep WHAT in your freezer?"
"Mice. And rats. If that bothers you, I can call them 'cows' instead."