Yesterday I was on the other side of town, near where I used to live & spend my money old music stuff. I decided to pop into the Swoppy, but didn't make it, as I saw that Found Sound was open for business (previously it was by appointment only).
I had a bit of a chat to the proprietor whom I have been acquainted with for a number of years.
Found Sound is a bit like the Swoppy, but the stock is a little bit fancier and they only sell items that they would like to own themselves (I'm paraphrasing).
Anyway, if you're in Melbourne you should definitely pop in and see what they've got.