> If I buy a used iPhone for $100 from someone who would die if they didn't get the $100, have I acted unethically?
In some cases, you have clearly acted unethically. For instance, if the iPhone is worth $800 and you have more money, but you're getting the $100 price because the man is dying now and there's nobody else around to offer him more than $100.
In some cases, you have clearly acted unethically. For instance, if the iPhone is worth $800 and you have more money, but you're getting the $100 price because the man is dying now and there's nobody else around to offer him more than $100.