I would not pretend to know more than a little about such pricing but can observe that prices vary by region.
In south Florida, probably not worth much, just going to north Florida would more than likely see a higher price and in New York City .... well, who knows?
But, again just an observation, I have seen prices thrown about here that I would have thought to be very low and a couple that I would have thought to be at least a little high.
Again, I think location will have an impact on price.