newsonline5000000 :
Could it be Volume discounted for Companies keys ? and if not legal how come They Stay 100% positive rating and not banned ? some of them sold 300 keys and no one reported them to ebay.
Have a look into their feedback to see how long they have been selling the keys for. For example, I did a quick search and checked the first listing for a $10 Windows 10 Professional key that I saw. Looking at feedback, the seller has 100% with 149 positive ratings. However, if we check their feedback page, we see that...
1) They only signed up for the account only 3 months ago.
2) Out of the 149 ratings, nearly all of them were received within the last month. It's also very possible that the initial reviews might have been from alternate accounts of the same user.
So, these people who gave positive reviews to this seller have only had their keys for a matter of weeks at most. Most likely, the seller will get shut down relatively soon and these keys may get deactivated, and the seller will just move on to their other alternate accounts to sell more.
newsonline5000000 :
Companies buy some 10000+ licenses , for Sure they will have leftovers to sell on ebay , I will try my luck
Companies can't legally sell their volume licenses, and once its discovered that someone is selling them, the keys may get deactivated.
Another option to buying a questionable Windows 10 key is to simply download the official Windows installer from Microsoft and simply not activate your copy. You will be prevented from accessing a few customization features like Wallpaper, and might occasionally get a message reminding you to activate, but otherwise the system should still be functional.