What about it? It's just a raiding belt bought from the BMAH.
Several heroic raid pieces have been popping up on the Black Market Auction House
Black market AH sells heroic gear, done.
Do people just constantly stalk these guilds and look at every character in them every day or something?
Black market AH.
Full list of all possible items here: http://www.wowhead.com/news=204376/m...use#bmah-armor