Coaching clients during a discovery call.

I have been told not to coach clients on discovery calls or sales calls. I have also heard you should give them a little taste of the power of coaching on this introductory call, which may make them more likely to want to work with me. I am wondering what your thoughts are? I would like to get more clarification around this topic and what seems to be best practices. I would think giving them a little taste would be the best way to go.

I usually spend a lot of time understanding their story, understanding where they are now, and finding out where they want to be. I explain to them how I can help and my process. Then I go into the cost of the program and the options available. I have had some success, but want to know how I can be better at my sales calls.