I've told this story before, but I'll post it here again as it was definitely an experience. Unfortunately, it was a "go home empty handed" experience, but an experience none-the-less.
I was trying to buy a Guns and Roses from a guy about 4 hours one way from me. I kept asking for specific pictures of the high wear areas and he would always be just on the edge of what I wanted or just blurry enough that you couldn't see details. He assured me it was in good shape and that the game worked. We agreed on a general price subject to me being able to inspect it. So, I get there and as expected, the game had some pretty significant wear areas and the game doesn't work. So I tell him, based on what I'm seeing we need to adjust the price. His son (probably 13 or 14 years old) is in the room with us and he turns to his son and says "son, watch as your Dad shows you how to negotiate" He then proceeds to tell me that he knows I've driven 4 hours and he's sure that I won't go home empty handed and he's not adjusting the price as he knows it's worth more than what he's asking. I ask him if he's sure he won't considering bringing the price down a bit to account for what we've discovered. He says "nope, you're going to have 8 hours of driving time, tolls and gas into this trip so I'm sure you'll pay my asking price" I look at his son and say "you're Dad isn't going to be selling this game today as he's not willing to negotiate"
I left and drove home empty handed. I got a call from his wife about 4 hours later (I was almost home) asking me if I'd come back as her husband had "reconsidered" (I'd have loved to see how that conversation went between this guy and his wife). I didn't go back as the price wasn't all that great to start with and there was still no guarantee that we'd be able to work out a deal.