Dude, take a chill pill, seriously! I think you're getting WAY ahead of yourself. I read your other post and was going to answer you there but then I saw this one.
Your snake is just a baby. It's going to take her a while to grow to proper size to breed safely, so if I were you I would spend the next 2-3 years reading up on and learning about kingsnakes and their husbandry. If you are serious about breeding, you can start looking for a young male now, that way you can raise them at the same time (although NOT together in the same enclosure) and observe and get to know them both.
Don't worry about incubator prices and the like yet, enjoy your little snake, learn how to care for her and look into the breeding thing a bit closer to the time.
Also, sounds like you probably have a Desert phase Cal king. Is she banded or striped? Can you give us a pic of her?
Good luck
~Roo
PS: You can also order frozen pinkies online, might be the best bet if no stores around you sell them.
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"Klaatu...Verata...Nicht--cough, cough, cough!"