I've seen this sort of thing play out a lot of times. As noted above, some people can't resist haggling. But, I refuse to haggle with myself! If I've set a price on something, that's the opening position. It's then the other person's turn to make an offer.

I understand the hard-wired haggling genetic disorder. I also recognize a deal when I see it and keep my haggling to myself. As an example, A buddy has offered to sell me a pair of Swarovski binoculars at a very good price. Used for sure, but they look like new. Still available new and I know what they go for. My first gut level reaction was to offer him less. But then my manners and logic kicked in. If I decide to buy them, I'll just pay his asking price. What gives me pause, though, is that even the good price is 4 digits.