To carry your reasoning to the logical extreme would imply that no one ever spent too much on a purchase, because whatever they paid for something is what it is worth, because that is what they paid. Seems like circular reasoning to me.
You kind of missed an important nuance in what we've been trying to impart (but that's ok, after all, how much info could one realistically cram into an informal forum post?).
It's not that no one overpaid because what they paid for is what it is worth. However, in luxury goods - such as the 9590 in question - it is almost always certainly true. In the category of basic human needs, however, one could find oneself overpaying when price gouging is taking place, simply because there is no alternative - including the alternative of "do not buy at all". For example, bread, rice, drinking water, electricity bills, maybe even rent - if these are things you can't live without, and you have no other alternative source for them (local grocery only, with the next nearest one being 20 miles away or so), then you are certainly overpaying - and you'd know it, because every time you are rung up at the cash register, you'd find yourself grumbling a few cuss words

(Monopolies also have a tendency to have this negative effect, hence why there may be some regulation of such in each of our respective states/countries/regions/etc)
No such contrived condition ever exists (that I can think of) for luxury goods - be they lambos or high-end enthusiast PC gear. Because even if you find yourself with no reasonable alternative source, you can opt not to buy and wait for a more opportune time - you would not literally die of hunger, thirst, or exposure to the elements.
I wish I could answer your queries about "value" more deeply without turning this into a boring lecture. This is a very fascinating subject that economists of all shapes and sizes - be they mere academics or "practical" ones who are actually out to sell a product or service - have been tangling with for a long time..
However, I do want you to think about something and, if you find yourself so inclined, maybe do some internet reading about it. If not, no harm done, after all we aren't in class, we're just a few PC enthusiasts shooting the bull around the water cooler, so to speak
I. Beanbag chairs, 3D-printed thingamajigs, and the case of the missing intrinsic value
Think about this: Goods sold don't necessarily need to be a tangible, physical asset, right? For one thing, they (the "goods" in question) could be a service or services. We just clump them all together as "goods and service", but we mean one thing: something that comes at a cost for the buyer that the buyer (mostly) willingly pays for due to the benefit/value of that "good or service".
That's my intro in establishing that
information itself is something of
value and bought and paid for as "goods or service". Information is important - it drives technology and business decisions, and the accuracy and timeliness of which can turn a decision based on it to be terribly bad or terribly good.
Imagine I were a tech consultant who you know possesses a unique insight in today's latest modern enterprise tech buzzwords or whatever other snake oil. Imagine you are the CEO of a startup, and you've read about me and say to yourself, "
By golly! If we're gonna make it as Silicon Valley's latest darling, we need this man's expertise!".
You give me a ring, I drop by your plush office with the stylishly cool beanbag chairs and 3D-printed prototypes of your latest thingamajigs adorning each sala set. You tell me that your company is at a crossroads early on in the game, and you need to know how most tech things related to you will probably pan out, confidence levels in the enterprise sector, any disruptive trends that may be a strength or weakness for your plans, etc. You give me 10 Manila folders to study for me to really grasp the ambitiousness of your dreams.
Next week, my report to your company arrives - 3 thick binders, single-spaced but filled with colorful charts thanks to some analytics. I bill you for the information provided in those 3 binders, and you gladly cut me a check for $75,000.00, bristling with confidence that your company will now have a better time at navigating the treacherous cross-winds of the tech sector and the enterprise sector. Also, you were not personally offended when I told you that no CEO in this day and age should ever be caught saying "
by golly" - information/advice that I gave to you for free, because I'm such a nice guy
1 year later, I am interviewed by some College or University paper. It's for free (gratis), it's an academic thing, they really don't have a budget for this, and they wouldn't even want to spend anything even if they had - they'd just look for a source elsewhere or find an entirely different topic. Anyway, the topic turns out to be the same as pretty much what your company wanted to know about a year ago. I checked the NDA, and we only agreed on a 6-month NDA. Cool, NDA down. In the interview, I go through pretty much the entirety of what was found in the 3 binders you paid for, which I now call a "whitepaper". This information is of course then published at the respective College or University, free for the consumption of anyone with the intestinal fortitude to slog through my very long ramblings purported to be "insights".
Now, you mentioned something about "intrinsic" value in your reply to Idontcare, and I see that's tripping you up because you can't get over the idea that something, by nature of just being itself, will have a set value, as if that value (by which we only mean in the most rudimentary way, being "cost"/price) was part of its characteristics. And to try to divorce you of that idea, let's get back to the scenario I created above, you being the CEO, me being the rockstar consultant who just billed you $75K for information.
If 1 year later, you see the exact same information published FOR FREE, freely accessibly by anyone with access to the College/University publishings, will you suddenly find yourself enraged and say "
holy crap, it was only worth $0? I've been ripped off! The intrinsic value of that thing was only $0 after all!".
Of course you won't (or rather, you shouldn't; I can't actually speak for you in a hypothetical scenario). For one thing, the information, being one year old, is already of limited utility - it's now useless for you and your competitors both (fortunately, you bought it from me a year ago, so you had that information much earlier and hopefully used it to great effect). This is why we only agreed to a 6-month NDA - after that, the information might as well be public, because its utility for enterprise-level or tech-innovation-ness is nil.
For another thing, the entity I effectively "sold" the same information to has no real utility for it other than academic purposes and probably historical record-keeping and filling their students' brains with useless jargon and snake oil. For them, this is just another paper to store in their archives after a handful of accesses by their student population and few misc people. For you, however, that exact same information helped you build a better business or an empire. It was personally valuable to you, even though to thousands of students it was just random gibberish they read then discarded. It was $75K well-spent for you, even though most students couldn't even be bothered to read for FREE. This would be true even if the info was not yet stale, as long as the other entity was still a non-competitor and the info would not leak to competitors through them. You'd still have spent $75K well because it helped you build your empire, even though some academics got it for a song after you did.
So we have the exact same goods in question - no real physical asset to speak of, although we can materially imagine it as those 3 binders - but it is not worth a dollar to the university, but is worth close to a hundred grand for you. Which is the "correct" intrinsic value?
There isn't any.
II. Intrinsic value of material goods?
And I know your first instinct will be to argue that information is different from 'material' goods, so let me tell you another story.
I saw three identical models of laptops on sale. Two were the usual black and grey/silver models, ho-hum. The third variant, however, was pink. But all three shared the exact same specs. The pink laptop, however, had a price premium of around $20.00.
I asked an attendant if this was a mistake, perhaps the printing of the specs was mistaken or erroneously copy-pasted. No sir, he said, it's just that pink laptops, they found, were generally sell-able at higher prices. Hmmm, good call, I said. I asked for the manager and congratulated him, telling him that move was legen -
wait for it - dary. Legendary. True story.
Anyhoo, I didn't buy it, pink isn't my favorite color; I do admit it was rather striking, and I can understand why some customers - presumably of the female orientation - would pay a mere $20 just to have a nice pink variant instead of the lame black or silver ones.
Where is the intrinsic value? Only the outer coloring of the equipment was changed. Are the customers paying an extra $20 for the pink variant being ripped off? Because by your understanding of "value", all three models MUST have the same intrinsic value, because you are viewing value from a strictly utilitarian point of view - cost/value must be based on what it does / can do / how it performs.
But that's just certainly so untrue. When you pay a premium to get a gadget or device in your favorite color - or a unique "limited edition" variant that the manufacturer just completely arbitrarily made and marked as "limited edition" just because he can - it has value for you because you end up enjoying it more, pleasing your eye, matching your drapes and hand-bag, and allowing you to brag to the office that you and only you (plus around 5000 other people worldwide, but screw them) have this limited edition thingamajig.
There is no such thing as intrinsic value. There is a cost to make items, but that is far from what it should be sold for, and what something is sold for is yet another different thing from value. So cost, value, and selling price are 3 completely different things; they simply co-exist with each other. At a minimum, you should sell something at higher than cost, and the maximum is merely its value to the customer - and that translates to whatever they are willing to pay for it. Which goes back to the concept of consumer surplus and ways to capture consumer surplus. However, several other market forces as well as relevant external factors do affect pricing, so it is usually never just dependent on cost and value.
III. Pay what you want at work
The Humble Bundle is yet another example. I've not actually tried or participated in it myself, but I've read it is "pay what you want". I'd imagine a lot of people paid a measly dollar, while perhaps an also significant chunk of people paid anywhere from $5-10. Now, because of the existence of those who paid $1, are those people who paid $10 or more being ripped off? Are they being cheated somehow? Where is the intrinsic value? What is the correct intrinsic value of the Humble Bundle: $1, $10, $100? If you say it is $X amount, then are those paying more being screwed, and are those paying less cheating everyone else?
The answers are both no, because there is no such thing as $X amount that means intrinsic value. If you like the games so much that you would gladly pay $20 for the bundle, even though a million other people just paid $1 legally, you aren't wrong or being screwed, and they aren't wrong or being cheaters. They paid what they thought it was worth to them, you paid what it was worth to you. Or would you insist that only crazy people would ever pay more than a dollar for any Humble Bundle just because the option exists and lots of people pay only that?
IV. How time affects the value of goods and services
I started with the example of information because it's the most clear-cut thing I could think of when talking about the concept of how time (or timeliness) affects pricing - or to be more accurate, how timeliness makes something more valuable or, in the case of lack of timeliness, less valuable. Good, timely info is perfect for making decisions. If the info only comes after decisions are made, then it is useless now since the path has been chosen and the die has been cast, so to speak.
We can also look at it from a more practical perspective: movie tickets. They have some good "material-ness" to them - either a good old-fashioned stub, or what you young 'uns have now, those smartcard tickets with the RF and what not. From a purely "being able to watch the movie" utilitarian point of view, buying movie tickets don't make sense - you don't control the environment, noisy bastards might ruin your experience or that kid who interrupted your enjoyment because he passed in front of you to go to the wash room right during the explosive action scenes, and considering the cost of the ticket for 1 (one) viewing only, it makes far better economic sense to buy the DVD six months later. It's far more enjoyable to watch it at your own couch and flatscreen, plus you can rewind if you missed something or want to repeat, or pause it if you have to do the call of nature, etc.
But all that doesn't take into account one thing - you have to wait for the DVD's to come out. If you want to watch it
right now, then you have to pay the piper. And then pay for the DVD's later if you still want them. Otherwise, not being able to watch them now will turn you into the office noob or pariah, and you find yourself unable to grasp the in-jokes that may have resulted from the weekend's latest box office. It is a shameful existence that you might wish to avoid, so although you'd have preferred a DVD, you pay for a movie ticket to enjoy it now.
Are movie-goers being screwed because a fixed price for single-viewing in an uncontrollable environment will never be able to match the benefits of having your own DVD at home? Where's the intrinsic value there? Again, no such thing. It's either worth it for you (therefore, of the correct value for you) to pay for the ticket, or it isn't and you'd rather wait for the DVD, or it is completely not worth it to you to spend time on that movie so you don't watch it and you don't buy the DVD either (i.e., Shrek 3)
V. Conclusions and Google-ables
Pricing goods is a pretty deep subject, and one of the most interesting parts of economics for me, personally. It's not as simple as most people imagine it to be, as is most things in life. If you really wish to know more about it, keywords that come to mind that can potentially lead you to a more in-depth read that I couldn't afford to do in a forum post are:
1. "Consumer surplus", "capturing consumer surplus"
2. "Demand curve and pricing"
3. "Market segmentation"
4. "A fool and his money"; see also, "soon parted" (kidding, sort of

)
Dr. Hal Varian's work in the economics of information are also pretty good reads, I'm not sure how much of his work is online, though, but it wouldn't hurt to google.
Last bit:
Making posts like this one and my previous one literally takes me hours to craft. I think the last one was 2 hours, this one close to 3. If you were a customer, I'd be charging you through the nose for my effort. But since I am doing this in my spare time, and it is of value to me to do so because I enjoy these discussions, I expend that effort freely and gladly - and also because you wouldn't pay a dollar for a forum post, even if it took hours to craft
So I can't sell you this lecture, even though I charge pretty highly for consultations, seminars, and trainings (not actually in economics, mind you; I'm primarily a tech guy and consultant, but in the world of business IT and tech, you cannot go anywhere if you don't understand economics and financial accounting, because these things are significant factors to tech in the real world outside of the lab). You get it here for free, while corporate customers pay the piper. Are they being screwed? Absolutely not. Not only am I a dashingly handsome and charming trainer, they actually need those trainings, seminars, and consultations. It is critical for their operation. Therefore, it is worth thousands in consultation fees for them.
The same cannot be said for you, or for everybody else with the intestinal fortitude to actually read what I wrote, here and in the previous one. You can either read it, skim it a bit, or skip it completely. You can either believe it, cause you to re-evaluate your beliefs and do further readings, or completely discard it as "crazy person talk". Whatever you choose or whatever happens, it is nowhere near critical to your operation (i.e., your life as an enthusiast), so it is not even close to being worth thousands in consultation fees. Exact same thing, different value depending on who is receiving it.
If I don't stop now, I might never ever stop, ever, so this has to be the end.
Cheers!