A consumer price research technique using four price perception questions to identify acceptable price ranges and optimal price points. The four curves (too cheap, cheap, expensive, too expensive) intersect to define the Range of Acceptable Prices and the Optimal Price Point. Widely used in new product pricing research and willingness-to-pay studies.
Van Westendorp, P. (1976). NSS price sensitivity meter (PSM) — A new approach to study consumer perception of prices. ESOMAR Proceedings, 139–167.
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