Should Selling/Buying AOTC or other Raid/PVP Achievements Be Cheating?

[Orctang-area-52 (Orctang)]

@Ghërman-stormrage

Does Blizzard passively approve of this or have they actively said there is nothing wrong with this?

Yes, they approve of this:

@Ythisens

I still have MoP gold. Gold carries for things like H ToT, CMs, and H SoO were very profitable for my guild and friends that I played with at the time to the point were I still have tons of gold from that left over.