i'm not sure of your area, but in the south that would be high, unless it really was mint.. northeastern areas tend to have higher tractor prices.
supply and demand can make things go for a bit more.
be advised.. parts will be a tad harder to come by for the fordsons.
as with any piece of equipment.. look for damage, repairs, leaks, wear, test it cold, hot and under load if possible.. drive in all ranges and gears.. test hyds and pto.
if it really is 'restored' and in A-1 condition, it's a good price.
if it's a farm worker with a coat of paint hiding some problems.. it ain't a deal.. not for you anyway.