The Value of a Pipe

I recently sold a pipe of mine on e-bay and now I'm wondering about how people price pipes. There doesn't seem to be a guide or "blue book value", which I find a little odd, considering how many of them are bought and sold. It should be fairly easy to price pipes in relation to year, general quality, size and shape. I tried looking a bit before I listed, with minimal results, so based what I was willing to accept on what I paid and what a new one would cost.
I will leave out some details, in case the person I sold to is here.
It was a mid-value Dunhill with a few decades of age that I didn't care for anymore. It smoked fine, but the bowl was not my style, so out it goes. I paid about $230 a year ago and sold it for nearly 3 times the value I paid.
The only reason I listed it so high was because I'm a negotiator. I turned down one low-ball offer for around what I paid, expecting to hear back (I would have happily broke even), but got no response. Then, about an hour later, someone came along and paid full price. No haggling, nothing. It seemed outrageous to me, and I had the haggling scene from Python's Life of Brian going on in my head... but the deal was done.
I guess, maybe, somehow this pipe is worth as much as I listed it for, but I can't see it and the little evidence I could find doesn't support it. Other examples don't go near that price and you can buy brand new ones for the same amount!
Somehow, I feel like I didn't get a fair deal out of the transaction. If it sold for $275, that was a solid deal on my part. But it went much higher.
And this is from what looks to be an experienced buyer. They have loads of purchases.
It just seems so completely out of whack. I wonder how often the prices of Dunhill pipes (and similar ones) fluctuate wildly on emotion? Is this common? It is such a weird experience that I'm not even sure what to think of it.

Yes, I feel like the buyer paid far too much because he/she didn't haggle and it didn't seem like a fair deal... after thinking it over. Just because I gained considerably, it doesn't effect my sense of a good deal.
It then occurred to me that maybe this is happening a lot. People might be paying outrageous prices, and it is tough to get good information for what pipes are worth. Has anyone attempted a buyers guide for pipes?

It's been great to hear a range of opinions on this -some spirited ones as well- and it is clear that there are different camps.
I use my judgement in negotiating. Used items -almost always- because somebody's sensibility of what they think is fair and what I think is fair leaves an obvious grey area of where the true price is. Unless, of course, it is their opinion that they are a master appraiser and it is considered abhorrent that someone would question that. I have come across those types before, albeit rarely, which is also fine. I don't usually make deals with them unless the price is correct and that doesn't happen often because there aren't so many master appraisers out there.
For me, it isn't a small thing. In a very conservative estimate, I've saved hundreds of thousands of dollars in negotiations over the years on private items. To me, that's money I want in my pocket. In business... well, I just can't imagine not negotiating. It seems so foreign to me. It is hard to imagine a company keeping someone around who just pays "sticker price" on things. I don't view my personal business finances any differently than I would the finances from a business I am working with to make a good deal.
I think it is place appropriate.
A used store - absolutely

Business - Can you even keep a job without being a good negotiator?

The lineup at the grocer - not so much

A house - I will fall off my chair if people come forward and claim they've paid asking price for a house without flinching (but now I'm wiling to believe it happens)

I've even negotiated for the people I'm buying from (rarely), like for instance when I was buying some art and the artist offered to kick in a discount if I bought 2 pieces. I refused and paid full price because it wasn't fair to them.
In my case, I had the "buy it now" and "make an offer" selected. I had previously sold a pipe for very little, listing another Dunhill at whatever the lowest starting bid was, and someone got a fantastic deal. Which is good for them. But this time, I thought let's use the negotiating feature and see what comes of it. You can offer/counter offer up to 3 times! To me, it's worth a quick message if it's going to mean a price difference of a few hundred bucks. To some others... well, some comments here and my experience are shedding light on it. It's interesting to me.
Sablebrush- It could be that I got a good deal. I bought it in Germany, where perhaps, there was a different market condition for some reason. Who knows?
Maybe it is becoming a lost skill. I'm curious if there is any correlation between the average (massive!) debt load and people's unwillingness to negotiate out of a fear of being viewed as poor. To me, it has nothing to do with perceptions of wealth, but rather, reaching the true price.
I guess the next time, I'll filter my sale through Sablebrush's experience, since he's not written it down! That could be an interesting business, maybe, for people to get a good idea of the value of things.