Atlanta Cutlery carries a passable blade, for about $15 if I recall. They also have a Damascus Steel version for about $34. I've made a couple of sgain dhus (sgains dhu?) using their blades. The one that I normally carry I made from a blade made by a guy I know from the Rendezvous circuit, and an antler crown from a whitetail rack. I used poured pewter to hold the blade in place. Turned out quite well, for a little under $30, and some of my time. The Atlanta Cutlery based knives come out cheaper, because the blades cost less.