Unless you're sculpting the figures yourself, it's very hard to make money off a small miniatures company. Think about it, a sculpt will cost you anywhere from $150 to $300 depending on quality. Molds will cost between $100 and $150. Then, the cost of metal and labor on a single part 28mm miniature can run about 65 cents a piece.
So, if you get 100 cast up, you're looking at min. $3.15 a figure to a max of about $5.15 a figure.
There are some cost cutting measures where you can pair with someone else's figures in the master mold, but still, is it any wonder it's tough to make a go of it when you have to hire sculptors and contract out your casting?
But, if you want to sell volume, you really need to have stores carrying the line. They take 50% off your retail price. It could be years before you make back the cost of a single figure and that's only if you sell through it multiple times.