Taking advantage of seller pricing errors I saw a website which was selling things, but a few of the items were $0.00. If I was to buy the item, I'd only have to pay shipping for it. I'm no expert but I've been around the block and the website seems legitimate and it just looks to be an error or mistake on the website. Would it be illegal to take advantage of this and get the item for free (not including shipping)?
If they actually mean $0, then that is not "taking advantage". If they do not mean $0, it is most likely that they will tell you "Sorry, we made a mistake, we're not gonna send you that Rolex for $0 plus shipping". If this came with free shipping, then you would not actually have a contract, because there s no consideration on your part (no payola). Fortunately, there is shipping, so there is a contract. You could then attempt to force them to send you the goods, which they might do rather than irritate you, but not if it is a Rolex. One of the defenses against enforcing a contract is "mistake", and a $0 Rolex would be a great example of that. Things get a bit more tricky if you relied on their free Rolex. You would look up the doctrine of promissory estoppel, to see if the seller could be estopped from making the mistake argument. Let's say that you also bought a Rolex Display Case from someone else at a cost of $100 plus shipping. By relying on their promise to sent you a Rolex, you have suffered a loss. The most likely outcome is that they'd have to reimburse your Display Case expense. (Finding) mistake airfares is an industry: a common response for the airline is to say "Oops, sorry", though sometimes they honor the mistake fare. Rumor has it that rather than get trashed on Twitter, the airlines honor mistake fares. You may find disclaimer language pertaining to verification of prices and availability, which also gets them off the hook. At any rate, you certainly won't be sued or prosecuted for assuming that they mean it and buying the thing; you might be disappointed.
My thinking is that there was no meeting of the minds, thus no acceptance. ( I can see that shipping the goods implies acceptance, however I understand that acceptance implies a meeting of the minds - and there would have been subterfuge to modify the return page with the lower amount - thus at the moment of apparent acceptance there was no actual acceptance) I doubt you would have a case against the other party criminally, but quite possibly in a civil court.
A company can charge each of its customers a different price if it wishes. Providing this discrimination is not on the basis of a prohibited reason (race, sex etc.) this is not illegal.
Summary from comments. (Hat tip @jqning) Daniel Nathan Ballard writes here: [It] is not only improper it is UNLAWFUL and may result in serious repercussions... Such a misuse may constitute false advertising... (“It is no doubt true” that affixing the ‘Trade Mark Registered U.S. Patent Office” notice on goods that are not protected by a federally registered trademark creates “a prima facie case of fraud against the public… .”). ... Such use is also a form of “unclean hands” that can bar the user’s registration of the mark. ... Such a use may also bar the maintenance of an infringement case. ... And the fraudulent use of the trademark registration symbol DOES provide other marketplace participants with standing to oppose the user’s registration of the mark. http://www.avvo.com/legal-answers/use-of---symbol-but-not-federally-registered-1125746.html
Note: IANAL Does the placement of a sticker stating, "We accept XYZ credit cards," essentially obligate a business to accept that card? It depends on whether you mean whether they are obligated to provide goods/services to someone who presents the card, or whether, having provided goods/services, they are obligated to accept the card as payment. For the first question, the answer is "no". The credit card brand could theoretically go after them, however, as names of credit networks are trademarks, so claiming to accept a card but not doing so is trademark infringement. For the second, the answer is "pretty much". Since they misrepresented their establishment, there is no mutual assent and therefore no contract. If they try to use "defrauding the innkeeper statutes", those require fraudulent intent. If you fully intended to pay for you meal by a credit card, and it was their choice to refuse payment, then you have no fraudulent intent. The only avenue I can see for them is some sort of equity argument, but that would be problematic, especially if they ask for the retail, rather than wholesale, price, and not worth the hassle of collecting. So, legally, you can just walk out, but in practice if they have a bouncer they might make trouble for you.
You can't, in general, know whether a distributor of a work has permission to distribute, or is a pirate site. I verified that they have posted an illegal copy of a work that I created, and I know that I did not grant permission to them (or anyone) to infringe my copyright. Both hosting and downloading works without permission is a violation of copyright law, so both parties are liable. Downloaders may erroneously rely on the "I didn't know!" defense, which in the US carries no legal weight. Even so, if you download my book, it will probably cost me vastly more to sue you for infringement than the damages that I might be awarded over your infringement. Usually, copyright holders go after the pirate sites, and only rarely go after particularly egregious serial downloaders.
Assuming the USA, since that's where they appear to be located. Spreading misinformation is not illegal- it is protected by the first amendment. There are exceptions but I can't see how any would apply here. You haven't mentioned any that you think apply. If some of the videos on the site guaranteed results or made medical claims, maybe that could be considered false advertising. However, I see no evidence of this. Users are advertised that paying for access to a bunch of hocum videos will get them access to a bunch of snake oil and this appears to be the case.
united-states The license won't let you sell the .stl file. Probably you have created a derivative work, which means you can't sell it without a copyright license (and the CC-A-NC won't do). If it were licensed under CC-A you could sell it without problems (you'd have to give attribution, of course). You could also sell it under the CC-A-SA, but once you do you have no control over the result -- anyone you sold it to could give it to someone else under the terms of the license. This could work, though, if it were (say) a commission and you only expected to sell one copy. I don't know what the situation would be with the physical objects printed under any of these licenses.