Sounds like a good business move to me. Those seem to be a regular post on here so I would think they might be your more ordered models.
If someone wants more "customization" then they order what else they want and are charged accordingly.
Makes sense to me.
Now.........if you can come up with a way to help me with my decisions that would help too. I'm trying to decide on something for my little guy now. I have enough trouble deciding for myself.