Check Craig's List and other traders as well as the websites of the VA Blacksmith's guilds ( Central, BGOP, Shenandoah, and Tidewater). There are often hammers for sale. There was one in Chesapeake and one in Chesterfield recently, IIRC.
Check out ABANA, IFORGEIRON, and the other blacksmith sites, too. There are regularly hammers for sale in their sales area.
Google "Power Hammers for sale in Virginia".
Since you are on the far side of the state, you might as well check West Virginia, too.
I would also suggest you check out the Iron Kiss hammers. They are really nice.