Serp nailed it.
You are buying time and rarity. If you have the building blocks of a new morph such as an adult Lav and adult Striped, then realistically you are looking at three years before you can possibly produce a Striped Lavender, but it could be done in two if you feed very frequently. If you start out with hatchings, you are looking at a six year project, which is a very long time to stick with a project like this. If you are going to wait six years to acquire a new morph, why bother at all. In six years, they will have a reasonable market value.
If you only save 1.1 hets for Striped Lav, you may or may not produce a Striped Lav from them the first year or even the second, so you better save at least 2.4 in my opinion. Now you have to consider the time and money it takes to raise 6 snakes instead of 2, plus the actual time in years.
I have a few snakes that only exist in my colony, such as Ice Lavs (Lava Lavenders) and “Diamond” Corns (Lava Charcoals). How much are they worth since they are the only ones in the entire universe? Their value is really not determinable, much like a Mopar with a hemi.
The high prices of new morphs is also placed at a level, where it is actually hoped that they may not sell, because it would be much better to hold onto all of them to mass produce them later. Even at a much lower price the income would be much greater in the long run. This method of “hording” a new morph is frowned upon as well, so it is really a no win situation. The prices of a new morph are way to high, or they are hording them for mass production.
Some Corn morphs have sold for prices between 2K- 3K, so even though 1K sounds very high, it is all about business. I have personally paid for a new morph to add to my breeding colony to save time, a lot of time. I purchased a Hypo Lav Blood for example and will be able to produce Hypo Lavs het for blood or Hypo Bloods het for Lav in two years, instead of possibly producing my first Hypo Lav Blood in three years. In four years, I will be able to produce quite a few Hypo Lav Bloods, which would have taken me perhaps 7 - 8 years to get to the same production rate by doing it myself.
I suppose it is all about perspective and your individual goals with your breeding projects.