This is part of a real estat professionals knowledge base. Knowing the physical condition of properties in a given area, the asking price of the properties, any special conditions with the sale and the interest level of buyers in a particular area.
I don't know exactly what could be going on with the property you refrenced but perhaps it was taken at auction, foreclosure etc. and the property is being remarketed as a very low price to entice multiple offers, or perhaps in the case of some properties, perhaps it was converted to a different use and multiple properties were made of the original property. Or it could be a mis-listing for a lien etc. or even an error in pricing. There are alot of reasons to explain the pricing. You may never find out the exact reason, or just part of it but by doing your research you can find out alot.
You could consult the Registry of Deeds to check on foreclosures, liens etc. You could consult the local building/inspectional services department and the zoning board/department and see if the property was sub-divided in some way.
Good luck, hope that helps