I had a similar situation recently - a pair of speakers was listed for about 25% off retail. I thought that was a little high all things considered - they weren't just a week old or anything - so I offered something around 33% off retail and got a somewhat indignant and insulted no... (but he didn't do antyhing weird, like block audiogon!) I never got around to replying because someone else posted the same set for around 50% off retail and I grabbed them within minutes...
