Lots of cheap stuff available.

Just gotta know what you're looking for

Unlike the American eBay forums, the Australia site is better.......by far. 

It is truly amazing that deep knowledge can be attained in a few months.  Most people take several years.

BH: "Unlike America Australian Ebay is not the place where you can get something cheap. But that is the place where you can sell your **bleep** for good money."

BH, eBay is an open  market place wherein sales are determined by what buyers wish to freely  pay.  If you are of a very parsimonious nature don't expect sellers to to be your "friend"

I have been here since 1999 and as a retired engineer have  made plenty of money selling used electrical/electronic/mechanical equipment., which I see is your interest.  I must also point out that when purchasing specialised parts I generally use eBay USA/UK because the prices are based by the economy of scale in these countries.

My suggestion: start selling lots of  "bleeps",  and then retire on all the accumulated "lucre".