You can still find the occasional great piece of medium fomat and large format gear at Camera exchange
This store used to be in Lonsdale St but has moved to Box Hill to survive
I recently picked up a zone vi 8 x 10 camera in great condition for a very reasonable price!
But I also shop on eBay and recently picked up a 240 MC Apo Ronar for $280 in mint condition!
At least there are options!