Although this thread doesn't seem to be serving its intended purpose, I agree with its premises.
1) Don't jump down people's throats when they ask how much something is worth. If you can't post something helpful, don't post anything.
2) A post that points the poster to the relevant stickies, without being snarky about it, would be considered helpful.
3) Such inquiries can be good for us if they give us a chance to see and learn about interesting bottles. If you possess relevant information but don't want to share it with a potential eBay seller, then keep it to yourself.
4) Some of us engage in 'illegal' alcohol transactions and some of us don't. I've expressed my opinion at length elsewhere. Yes, it's a crime, but it's not murder. We should be able to co-exist. When interesting bottles are posted here, it's almost always possible to communicate privately with the poster. 'nuff said.
While Mike is correct in saying that none of us are professional appraisers, I can't believe any responsible professional appraiser would attempt an appraisal of any old bottle of American whiskey, so if you find a person who claims to be a professional appraiser who says they can make such an appraisal, be very suspicious.