I definitely disagree! I love our normals and single gene animals just as much as any other animal.
There is also one thing when it comes to breeding and selling animals that no one brought up and that is your reputation as a breeder. I believe that you need to start out with single gene animals and more simple combos to start with to build your reputation in this hobby/industry.
I know I am more likely to make a higher dollar purchase for a multi-gene animal from someone that has put their time in and has built their rep from the ground up. Rather than someone who just shows up trying to sell 3-4+ gene animals.
Having a good rep is also very important when you are dealing with combos such as a Pastel BEL as you have used in your example. There is no way I would purchase one from someone that doesn't have a good rep. because of the risk involved with such an animal.
Just my