Quoting the wise words from IVG forums:
We have a lot of guys who sell Unopened/Sealed/Brand new stuff here. There's no way of saying if they're grey market dealers/someone selling something on behalf of a grey market dealer. I am not too sure if all companies allow OEM products to be sold either. There are those who went as far as forging a bill and by buying second hand products from those who are selling it in a low price and selling it at bit more than the earlier quoted price after a week or 2 just to earn a quick buck, so there's a very good chance of such grey market dealers here.
Recently we've been noticing some very strange activity in the Trading Post. More and more people are using TP to make money and expand their grey market businesses. That's not why the TP exists. We've also got some disturbing complaints of a more serious nature from members. You may have noticed that certain members have been selling sealed/new/unused games, consoles, etc at unrealistically low prices. These could be stolen items or items bought via stolen credit card info. We cannot confirm these accusations, but what we can do is try to stop these guys from using IVG to make money and promote their grey market businesses.
We have a lot of guys who sell Unopened/Sealed/Brand new stuff here. There's no way of saying if they're grey market dealers/someone selling something on behalf of a grey market dealer. I am not too sure if all companies allow OEM products to be sold either. There are those who went as far as forging a bill and by buying second hand products from those who are selling it in a low price and selling it at bit more than the earlier quoted price after a week or 2 just to earn a quick buck, so there's a very good chance of such grey market dealers here.