I m looking at a 3 bedroom 2.5 bath house in Dorchester County, South Carolina that was built in 2009 for $160K, 2400 sq ft and is now listed for $210K. Needs some paint and new carpet/flooring.
No one here can answer your question because a home seller can put a house on the market for any asking price he wants. For all we know the house is in bad repair or is still only worth $160k (I've seen that happen to homes in a neighborhood that turned out to have a sewage problem). You as a buyer don't have to pay a real estate agent–only the seller has to pay. So get yourself a trustworthy real estate agent to help you. Make sure he is a BUYER'S real estate agent by asking him, "Are you a buyer's agent?" If he says no, then find an REA who is–otherwise the REA may be representing the seller, too, and you could pay more for the house than it's worth.
There is no cost to you to use a realtor. Realtors are paid for by the seller.
A realtor will be able to provide you with legitimate comparables to price the house.
Just knowing what county a house is in isn't enough to determine a value. People would need to know the specific street and cross street. Plus be very familiar with the real estate market in that area.
You could try 15% below the asking price. The trouble is, some sellers get in a huff and won't talk to you any more if you low-ball them too much. 10% below will keep them talking. I have had two agents tell me the buyer would never take what I was offering and both times, we had a deal.