Primary research for B2B pricing requires a focus on how the offer creates value for different types of prospective customer and how the customers buy. It is important to combine surveys with interviews and to avoid confirmation bias. Direct questions about willingness to pay (WTP) give misleading results.
User-based pricing has gotten a lot of bad press recently. It is generally seen as a lazy pricing metric, used by companies that have not thought deeply about their value metric and how to connect the pricing to value. But there are many cases when user-based pricing is the best metric and should be used.