Know your gun, know the market. Go past the market if you want but understand you might never get your money back, so that purchase will be for lifetime not until you decide to sell it for something else. If you want to try buying at a lower price a reasonable offer hurts nobody. If they say no then you can always try later or just move on. I know some guns are not easy to find another example of but none are required for me to stay alive. I pass on ten times many bad gun decisions than I pass on good ones.