I guess the bottom line on all this is: I've been around rock shows for 40 years, in a state full of caves. I guess I've only seen two "speleothem only dealers" in all that time: one a local fellow by the side of the road with a table who probably didn't know any better, and the other a New Age-y type promoting the alleged mystical properties of the stones. At an average rock show of 30-40 tables, there may be one or two dealers with one or two small stal, usually not calcite, most often labeled from Africa, and never at the sorts of prices advertised on the Net. Actually, rock prices of all kinds are inflated on the Internet, because generally, they are selling to the public who are clueless, not to hobbyists, with a notion of a decent price for a specimen.
It's not a laughing matter, but neither is it one of life or death. It strikes me, though, if cavers took the discussion down a level of intensity, and that if half this energy went into educating the potential buyers or collectors, and was not directed against the sellers we would do a whole lot more good.