Land values in Mount Ida, Arkansas

[Elizabeth I Winnals]

I have a friend that has 20 acres of land in Mount Ida, Arkansas, which he is looking to sell.  He bought 20 years ago and doesn't have a good idea of what land is worth.  He didn't have good experience with local broker.  I have looked online and haven't found much information.  I am from the East Coast and have no idea of property values in the area.  The property is near intersection of route 92 and 30 in Mount Ida, part of the property is on the South Fork Ouchita River.  Any thoughts or if you can point me in the direction of how to get idea of what the land is worth would be appreciated.