Let's say that the Belizean government has determined that yearly benefits of creating a 20 nautical mile reserve are $100,000 due to increased tourism (~200,000 Belizean Dollars) and the costs are $200,000 in year 0 and $80,000 each subsequent year (enforcement costs and lost revenues for local fishers).
Consider the alternative of a marine reserve: a managed fishery with estimated net benefits equal to $20,000 Belizean dollars in perpetuity.
Which project should be undertaken if the marine reserve were also valued into perpetuity?