Not to mention, this is a general whole lot of crying. People are assuming that other players are going to really go out of their way to cockblock others from the brawler's guild for a long period of time -- they're not. Especially with the removal of the Realm First achievement -- they're simply not.
Also, why are people complaining that there's some content for the hardcore AH grinder? What, just because their playstyle does not suit you they can't have ANYTHING? How many things are released SPECIFICALLY to cater to the diehard AH player? And how many updates are released for everyone else? Even if diehard AH players are only 1% of the playerbase, it makes sense that 1% of updates should cater to them, no?
Not even saying this does cater to them -- this caters to everybody. Rich players who love solo content and are good enough to excel at it WILL pay hand over fist for these invitations early on. Pumping so much gold out of the economy helps make the poor players (presumably: you guys) 'richer' in the sense that deflation makes your gold more valuable. You will still get entry, albeit maybe a week or two later. Will it kill you to wait a week or two? Are you in BiS raid gear, BiS pvp gear, with all achievements, all pets, all mounts, etc and have literally nothing else to do in the game for those two weeks? Even if you were, I'd tell you to spend those 2 weeks learning how to AH effectively so the next time something like this comes up you wouldn't have to wait 2 weeks.
You guys should check out Louis CK's skit on "Hilarious" about how everyone wants to do their FAVORITE THING RIGHT NOW, and they won't settle for anything less. Then you should head over to tvtropes.org and read about "unpleasable fanbase," because you are fitting the cliches.
This may be the only time I say this to an undead rogue, but you are my hero.
I don't play the AH, and it might take me a few weeks to get into Brawlers' Guild myself.
Let the AH barons (and the mob farmers) have rights to Brawlers' Guild for a little bit. It will still be there a little later for the rest of us.