I would do some research on breeding before you pick up another. There is a lot to consider when thinking about breeding, primarily hatchling care and what you will do if you don't sell/re-home any of the babies.

As sho220 said you would get pastels and normals from a pastel to normal pairing. Pastels are probably one of the cheaper morphs, but it really depends on which sex you are buying. Females generally cost more.