Markets go up and down.
At issue with corns - they are too easy to breed, anything that makes a profit today will be difficult to profit from in 5 years because corns are too easy to breed and they have rather large clutches.
However - one thing I've noticed is a lot of hobbyists who breed pay too much attention to the simple morph genes and not enough attention to the rest of the snake.
This happened in Brooksi kings - In the '80s there use to be some really super nice very pale pattern gorgeous yellow lines (not sulfur), I believe many of them were Love Line but there were others. Then the brooks morph phase craze hit and now it is difficult to find those lines, many "brooksi" lines out there have been mixed with the uglier northern floridana but are still called brooksi, etc.
There still are a few breeders with genuine brooksi around but you really have to do your homework to find them, and often they only exist as morphs - to get the nice wild type brooksi you often need to cross the different morph lines to make double hets, which is kind of too bad, but anyway - this is a corn forum.
If you are good at selective breeding, you may find it easier to offload your offspring because your stock will look better than the rest. And as the economy rebounds (it will), having quality stock from your own selective breeding projects will be a benefit in a corn market where many breeders left.
What to do with offspring that are difficult to sell in the present? There are plenty of snake eating snakes. Elapids, coachwhips, Indigos, etc.
If you do not mind selling them as feeders, at least you will not have to pay to feed your selective breeding rejects during the current poor economy.
I personally am going to try and improve the Caramel and Charcoal lines. I had bigger plans but I'm scaling back. I think the Caramel gene is under appreciated. Many people only like the gene when mixed with other genes (like amel) but I think that is just because most caramels would be rather mediocre normals if not for the morph gene, I think by out-crossing and selective breeding, some really nice single gene Caramels could be produced. Time will tell. Charcoal - a lot of people like Charcoal, but recently a lot of charcoals on the market have yellowing necks. Some think it is food that does it but I think it is genetic. I consider myself very lucky to have a charcoal without yellow on the neck, like the original, though her offspring may as I out-cross her to other lines towards my goal, time will tell I guess - if it does, hopefully I can selectively breed the yellow back out.
Anyway - you generally aren't going to be profitable breeding herps unless you do it full time and pay close attention to the market and what the market wants. But I do think if you develop selective breeding skill, you can enjoy the hobby and sell off all your offspring.
I'm guessing Pituophis will be the next big colubrid. There are already plenty of morphs within many of them, and there are some really good locality lines as well. Watch the pit market.
Some consider pits too aggressive, but that's not always the case, and selective breeding can create better tempered lines. My WC female, collected at ~ 3.5 feet, never even tried to bite me. My WC male, collected at ~ 14 inches, also never even tried to bite me. There are docile pits, and GTPs and ATBs can be extremely aggressive yet have a good market.
But back to corns - Next year will hopefully be my first year breeding corns.

She's an '07 - but she's currently right at 36" and over 300 grams. Her intended mate (also a fabulous Okeetee) is an '06.
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Arrrggg!
It's like Shalom, but for pirates.
- iCarly