Occasionally a website will post incorrect prices for items they are selling. (Maybe it was caused by a typo during their data entry process, or the result of a bug in their code.) Once they realize their error they correct it.
If I notice the error before they do, and I attempt to buy the item before they fix it, is that legal? I.e., if I knowingly try to exploit their mistake could I be violating any law?
Now, if I continually monitor websites, waiting for such an error, just so I can buy at erroneously low prices, does that pose any further legal issues?
I'm not hacking or changing their prices. I'm just waiting to buy until an incorrect price is mistakenly posted.