You're right, Jeff, they sure didn't sell well when they were available. OTOH, there sure seems to be a lot of interest in these boards in 9x19 revos lately. And folks seem to jump on the ones that turn up pretty fast. I suspect that if S&W were to bring it back, there'd be a pretty decent market for the 940. While it's on the heavy side and holds regrettably few rounds, I think it offers the best combination of size, reliability and cartridge of any pocket pistol.
In fact, the 940 is the first gun that I've liked enough that I would buy a second one on sight, just to have it. wildboarZ, I bet you could do a search in this forum and find out what I paid for mine about 6 months ago - I think it was in the $250-260 range. It had been used, and it had had some work done on the internals (it had been the utility gun of a gun store owner - it has a smooth trigger pull, not especially light). I've de-edged and polished up the trigger face, and now it doesn't put a blister on my trigger finger after 100 rounds.
wildboarZ, I think I'd pass on the $395 price. I agree with Jeff's general assessment that a used j-frame is not worth >$300 (although sometimes it's worth paying a little more for an uncommon model that you've been looking for), but when I run across another one in that ballpark, it's coming home with me. Good luck, and let us know if you find one!