The prices you quote seem realistic for what you are receiving and who is running the course. You have to take into account the cost this operator has had to invest in training material, licencing fee from the two OEM's (Robinson and Rolls Royce), the cost for the instructor to be approved and assessed plus all the EASA Part 147 time and cost.
There will aways be lower cost trainers who are not OEM approved, but at least where you are, you can guarantee the information you get is up to date and you can always go back to them for support, as you know they will still be there.
I would not hesitate recommending the company doing your training, and I have no connection.
Enjoy the course and enjoy the R66.