Heritage Contingent Valuation

Ticket sales capture only the use value of actual visitors and miss two crucial things. First, heritage is largely a public good whose preservation benefits many people who never pay to enter. Second, much of heritage value is non-use value, the satisfaction of knowing a site exists and will survive for future generations, which no market price reflects. Contingent valuation uses a survey to elicit willingness to pay for a defined change in the heritage good, capturing these non-market and non-use values that ticket revenue cannot.

In the dichotomous-choice (referendum) format, each respondent is asked whether they would pay a single specified amount, with that amount varied randomly across the sample. It is preferred because it resembles a familiar yes/no vote on a real policy, is cognitively easy, and is incentive-compatible under plausible conditions, reducing strategic misreporting. The share of yes answers at each bid level traces out the willingness-to-pay distribution, from which mean or median values are estimated using a binary-response model.

Credibility depends on design and testing. The scenario must be plausible and clearly described, the payment vehicle realistic, and the question consequential. Validity is checked through scope tests (larger goods should yield larger values), theoretical-expectation tests (willingness to pay should rise with income and connection to the site), and scrutiny of protest responses and hypothetical bias. Well-designed heritage CVM studies that pass these checks are widely accepted, while poorly designed ones are rightly treated with caution.