Here is my 2 cents. There are a couple ways to approach what to breed.
1. You can produce things that the "general public" finds attractive. These may or may not be things that you personally like.
2. You can produce "tool boxes" which is my focus at this stage in the game. The actual animal may not be attractive. Take the little guy on the left. To me he is a little bit of a washed out mess, but he has the best of my phantom, mojave, and pinstripe genes. He was not created to be sold. He can be put to single gene females and make beautiful stuff.
3. You can breed to make something different, like the "Red" thing that was posted yesterday. Animals like things can catch on or they may only stay popular until there are a lot of them because at that point they are no longer different.
As far a pricing goes, you can make guesses but I would never assume that you will make a certain amount. At best, I know the minimum price I can get for something because I generally wholesale to the same place every time. This amount is way lower than anything you see on Morph Market. The other thing is you have to realize that no one knows you. You start out with zero reputation. I have a good rep in my own little world, but no one in the public domain knows me from anyone else. I have a real job and I have to focus on where the real money comes from. You need to consider this when you are trying to figure out what you are going to charge. You for example could order from me or Garrick. I would expect that Garrick would get more for the exact same animal since he has spent years building his business and I am just a guy with an expensive hobby even if the quality of my product is high.
I know I did not answer your question directly, but I hope I gave you some things to consider that will help you establish a formula on your own.