I would want a copy of the subdivision survey in hand before I made a decision. What county are you in? Does the land include mineral rights to coal, oil and gas? 22 acres is a decent amount of land. Depending on the county and topography, surface rights alone may be worth 1000-20000 per acre. Are there wells on the property, you may also be entitled to royalties.
I would not sign before having a survey done.

