IMO calling everyone that sells MSFT MSDN keys a scammer is only going to make is easier for scammers to scam because they all have negative trust, so it will be more difficult to differentiate from the ones who are currently acting honestly from the ones who are outright scamming their buyers (eg receiving BTC and in return give nothing, ever). This has resulted in many people scamming while pretending to sell MSDN keys, even after they have negative trust.
The issue isn't with the MSDN keys. That's not the reason i have created this thread. In any case, he has never disclosed anything about the sharing nature of these keys in any of his prior sales thread, or any mention that the keys will stop working. No disclosure which you have mentioned.
Some of his other keys are downloaded from public sources (server keys, antivirus etc). They are either hacked or pirated keys. He then passes off these keys as geninue retail to sell at high prices. Buyers purchase them without knowing the truth that these hacked keys eventually get patched. This isn't an outright scam but he's obviously trying to deceive buyers.
Several members including myself have asked him some valid questions about his vps, not only does he not answer them, he reply with tons of vulgarities. Again i don't see why he's not answering simple questions about those servers. Only reason is he can't because he knows nothing about them.