Although shadow pricing may be inaccurate, it is still often used in cost-benefit analyses. For example, before defining a project, businesses and governments may want to weigh the costs and benefits of the project to decide whether the project is worthwhile. While tangible costs and benefits such as the cost of labor are easy to quantify, intangible costs and benefits such as the number of hours saved is much more difficult to quantify. In this case, business owners and policymakers turn to shadow pricing to determine what these intangibles are. There are usually many tools to estimate monetary values of these intangibles. They include contingent valuation, revealed preferences, and hedonic pricing.