I am, but it's not Glebe, it's the Ultimo Community Centre, which is close(ish) to the Ian Thorpe pool.
There are not a lot of "bargains" there, but a lot to see, touch, and discuss. It can get quite cramped, too. Worst value I saw last time was an M5 for $2,200 (ok, it was in reasonable condition). Best value was a new film change bag for $5. I'm sure others have done better, but it's nice just to look, too!