Doug,
Have you and the guys ever thought of using Youtube and other forums to advertise some of your already existing product? Many of your battle markers and tokens would be gobbled up by Flames of War and Bolt Action players. I think a demo of HBG minis being used for Memoir '44 battles would also be a boon to your sales. Lastly there are players who play other games that may become interested in Global War when they see what they might be missing out on.
I listen to several podcasts in different genres of war gaming. They frequently point their listeners to small companies that make accessories or custom minis simply because they love the product. Often, (like HBG) the smaller companies they advertise or mention make a less expensive and superior product to the OOB pieces and accessories.