You can PM me to find out the costs (and I'd have to think to remember anyway). I satisfied my hypnosis requirement by doing a home study course, which was great. It's a course that is approved by Hypnobabies.
It took me some effort to get through all the requirements but it didn't take too long. One thing that is great is the support you get from the Hypnobabies Network once you start teaching. And it's very easy to get going with classes once you get the certification because all the materials are provided for you. There's no question about how to teach the class.
I LOVE teaching Hypnobabies! I think all of us instructors do!