How to customize silicone mold?

I am going to open an online shop for handmade soap. Here are my questions:
1. I need a very small amount of silicone molds, but I think they are too ugly on the Internet. I hope to customize them. If possible, please introduce a few of them~
2. I am not very sure what the customized price is
3. The amount is too small, can the merchant do it, tears rush