Congratulations on your new cookstove! (Our stoker should be arriving before the end of nest week. Can't wait.) Our stove dealer does sell bagged coal, but we found a better price at a local ice company of all places.
Try local ice companies, landscape material companies, lumber/saw shops, etc. (A couple of weeks ago, I spotted a swimming pool place selling pellets. I'll have to stop by and tell them coal is king!
Here's a link to yellowpages.com: http://www.yellowpages.com/berkeley-springs-wv/coal-suppliers?g=Berkeley+Springs%2C+WV&q=coal+suppliers
I plugged in your area and did a search on 'coal suppliers'. Also, I believe I saw an ice co. selling coal in Martinsburg. I don't know if you would consider that too far away.
In any case, good luck.