12/02/2012 04:56 PMPosted by RunebreakerBMAH is where you get it, not from other people. There are many of them starting for under 10k gold there.
There are 3 places to get invites to the Brawlers Guild
Black Market Auction House
Horde and Alliance rares in Karasang (3 for horde and 3 for alliance)
Rank 7 Brawlers Guild members (one per character as its awarded through an achievement)
So yes you can get it from other people, but it will be the lowest source of them and requires someone to already be a member. The BMAH will always be the most plentiful source and eventually they won't be going for much above the base starting price which is around 1-5k or something like that.