I'm sorry I haven't had time to respond to your PM yet. I can really only speak for myself. I only produced two clutches last season. One clutch, the smaller, had two snakes that were so nice I chose to keep them. The others were sold nearly immediately. These were Miamis.
The second clutch, bloodreds and granites, was of extremely nice quality. I had them priced fairly high. About half the clutch sold very quickly, and then I had a little Thanksgiving Sale which offered discounted shipping, and all the rest sold except one, who I wanted to keep for an additional couple months for observation. That snake is now also sold.
Since I don't want to wholesale any snakes, and since culling for no reason is out of the question, I have to pick and choose which projects I really want to do each season, keeping in mind that I might have to keep some babies for many months. Since I am working with multi-gene animals, they are generally in demand. I _chose_ to only start projects in which the "by-products" are as attractive and desireable as the target morph.
Actually, the market for lower-end corns, the basics, is probably much more reliable and easy to sell to than for the higher-end morphs. At shows, people want to buy a snake for $20 or less. So the normals and aneries and amels are in demand.