Exactly. "Market rate" is ridiculous, and justifiably private property owners should be able to hold out sine market rate doesn't factor in switching costs, both financial and emotional.
I think 3x market rate is a decent starting place.
I think the amount paid should be based on the average market rate of properties where the person must move to have the same commute and amenities. If the government wants to destroy the poorest area, at least folks there can move somewhere nicer without much inconvenience.
I think 3x market rate is a decent starting place.