Cost to move is only part of the problem, you need to move while losing all your stuff which may or may not include your car etc. Further, this is not limited to housing but includes farms / offices / schools / factory's and infrastructure like highways and water pipes etc.
As to area, nobody lives in the ocean and houses next to an exclusion zone also have huge drops in property values. So, yes some sort of decreasing metric, as a sanity check the property value drop from being within sight of a nuclear power plant is going to be more than 300$. Further, actual exclusion zones may depend on wind so risk really does extend out to 40 miles.
Edit: As an upside, if you included these costs then there would be a push to place reactors in the middle of nowhere to lower costs which IMO is a very good thing.
PS: As a sanity check fukushima is estimated to cost tax payers ~188 billion$ and many people are worse off after the disaster so real costs are higher than that. If the odds are 0.2% that's ~400 million vs your estimate of 300 * 100,0000 = 30 million.
As to area, nobody lives in the ocean and houses next to an exclusion zone also have huge drops in property values. So, yes some sort of decreasing metric, as a sanity check the property value drop from being within sight of a nuclear power plant is going to be more than 300$. Further, actual exclusion zones may depend on wind so risk really does extend out to 40 miles.
Edit: As an upside, if you included these costs then there would be a push to place reactors in the middle of nowhere to lower costs which IMO is a very good thing.
PS: As a sanity check fukushima is estimated to cost tax payers ~188 billion$ and many people are worse off after the disaster so real costs are higher than that. If the odds are 0.2% that's ~400 million vs your estimate of 300 * 100,0000 = 30 million.