Dynamic pricing, the practice of varying prices in response to shifting market conditions, has been in the news a lot recently, and not exactly for good reasons. The British pub chain Stonegate, the fast-food franchiser Wendy’s, and the airline JetBlue recently drew strong criticism for their plans to let the prices of some of its products fluctuate according to demand. In mid-April, the company that owns and operates the Legoland theme parks and Madame Tussauds museums announced its own plans to make prices vary, which the business press often refers to as “surge pricing” or “Uber-style” pricing.