An investment aimed at introducing an augmented reality solution to improve the experience of a museum visit is ex-post evaluated using a CBA. A contingent valuation survey is carried out to museum visitors to measure the willingness to pay for this cultural experience and the results are compared to those of a similar survey carried out ex-ante. How would you expect the ex-post willingness to pay to be as compared to the ex-ante estimation? Which aspects are likely to influence the results of such a survey?