You can never deliver too much value. Many sales professionals believe that sharing information is a bad thing. Their beleif is based on the idea that the more information you provide a customer, the more they'll shop you and buy elsewhere.
If you share this fear, then you are probably locked into a patter that is preventing you from being likeable, which probably means you're not creating enough value to make a prospect feel obligated to do business with you.
Remember, the key to sales is to provide more value than what the prospect is expecting.
Until next time, continued success!