Summary: Using a restrictive question to get a direct answer or specific bit of information from a counterpart.
Anytime you are trying to win a concession or gain a deal point in a negotiation, Asking a Closed-Ended Question is a good idea. Closed-ended questions are effective because they are direct and to the point. In contrast, they are not good questions to ask when you are striving to build a relationship or stimulate discussion.
Example
An employee in charge of office supplies asks a saleswoman, “If I can obtain budget approval to purchase two SMART Boards, which would normally incur a combined cost of $4,000, can you get the price with tax under $3,750?”