This article is from the rec.audio.* FAQ, by with numerous contributions by Bob Neidorff others.
A great source of information on this topic is available from
books on buying a new or used car. However, some very helpful
general tips include:
Know the competition and the dealer.
Know the gear.
Know the prices available elsewhere.
Believe in your research, not their words.
Stand your ground.
Be nice to the people but hard on the deal.
Be prepared to walk away if they won't agree.
Expect their lines and prepare responses in advance.
For example, expect the dealer to claim that the
Nakamichi deck is the best cassette deck on the
market. Be ready with a reply such as at that
price, you can buy a DAT machine which has
better frequency response, lower signal to noise
ratio, etc.
 
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