Is 'In other cases, we must rely on survey approaches to estimate WTP, usually through a variant of the contingent valuation approach, which generally involves directly questioning respondents for their WTP in hypothetical market situations.' a fitting logical lead-up to 'Surveys can estimate WTP by questioning respondents.'
In other cases, we must rely on survey approaches to estimate WTP, usually through a variant of the contingent valuation approach, which generally involves directly questioning respondents for their WTP in hypothetical market situations.###Surveys can estimate WTP by questioning respondents.