Are you thinking of providing training courses or do you need training yourself?
Most good trainers will provide courses tailored to your needs and the cost will depend on the number of candidates and the length of the course.
And most trainers will provide training at all levels, again depending on your needs.
If you haven't done so already, you can get a lot of information from the search engines by typing 'robohelp training'. If you are looking for training, let us know where you are located and I'm sure people will pipe in with recommendations.
Someone was asking me about giving them RH7 training for two days, and I was wondering what I should charge them.