Well, for what it's worth, I got one of the Superlux PRA218 Kick/Tom Mics off of Ebay, just for curiosity. $29, and $9 shipping.
I let a friend try it, on his voice and celtic harp, and he loves it for live use, in preference to an SM58. Very bright, and it added a bit of snap to his voice, which needs it. I didn't think it worked on the harp, but nothing dynamic does, really. He's so happy with the thing, I haven't gotten it back to see what else it'll do.
I didn't take it apart, but it seemed well enough made and finished.
Monty