18,000 Seats Gone After A Couple Hours For Mayweather McGregor Press Tour, Barclay’s Center, Brooklyn?

I was just looking up info about the press tour that was just announced for the Floyd Mayweather Conor McGregor fight, called the Mayweather vs McGregor World Tour and it said that there were free tickets at the Barclay’s Center in Brooklyn, NY.
The seating capacity for the Barclay’s Center is over 18,000. I figured that’s a cool idea, so that there is plenty of tickets for anyone who wants top check out the press conference.
Not So fast!
I just checked TicketMaster.com where they announced the tickets are available on a first come first serve basis, and it appears that none are available.
Right now it looks like this was just announced – could they have all been grabbed that fast?
Maybe this really will be the fight of the century. Unless it was a premature announcement and they aren’t ready yet.
I did also notice how the nosebleed seats for the Mayweather McGregor fight are starting at $2,000, crazy!