Er, I would think judgement is important here. Not all price info equates to thread crashing. Sharing price info is part and parcel of consumer education and awareness. It is good and in the right spirit consistent with this Consumer Corner.
However, I would agree that some instances of price revelation are premeditated to sabotage the somebody else's efforts. Which is why I respect good moderators, it is a tough job, because a good moderator has to exercise 'moderation' and good critical judgement and not practise a 'one bamboo fell the whole boat load of people', if you know what I mean.
Just my humble 2 cents. No offence intended. Just speaking my mind.