In General: <!-- https://www.quora.com/What-are-the-best-qualifying-questions-asked-in-pre-sales -->
1) # Could they benefit from your product/service?2) # Can they afford your product/service?3) # Are the benefits greater than the cost for them? 4) # Are they the decision maker or can they connect you to the decision maker?5) # What is the decision making process? How much time will it take them to purchase?