So I'm nosing around for a used Kahr CW9. I find one for $350 OBO. Then he says it's good for parts. That's when I figure out that he's milled the sights off for the Deltapoint. The Deltapoint is more than the Kahr. Never mind what I think about that. If I got the Kahr for, say, $250. Any idea what (and if!) it would cost to have some sights milled or drilled on?