[jamesnorden]

If you buy a $20 key you're both pirating and giving money to a criminal, so it is, in fact, worse.

[akimbostrawman]

How can it be piracy if the code are valid. Most of these keys come from legal source in other countries with lower prices or from bulk resellers. Either way for many giving more money to microsoft directly is even more unethical.

[dankwizard]

Look into G2A - Nothing illegal about it.