What do you ask customers to find out why they almost didn’t buy?

[Caleb]

So I want to know from you guys, what questions do you ask after a purchase to understand what nearly stopped someone from buying? I want to go beyond “How did you hear about us?”. I’m interested in finding out whether price, unclear information, or something else caused hesitation. Let me know wow do you collect that feedback without making the customer complete a long survey? Can you guys share a question that produced a useful answer and what you changed because of it.