► How have you sold product X in the past?

► What objections did you hear, and how did you overcome those objections? What did you say, and what did you do?

► What have you done successfully to get people to try on clothes or to interact in other ways with the products?

► Tell me about the most difficult customer you've ever had to serve.

► What were your units-per-transaction or average-dollar-per-transaction stats in your prior positions?