I live in Australia and things are more expensive here.
I searched eBay and the cheapest used DSLR camera I can find is around $450. Is that a bad price? Should it be cheaper?

I have searched in the DSLR section of eBay (I chose Worldwide in the search options, but I don't think it really is worldwide like it says) so I have searched all the DSLR cameras available to me and none have been cheaper than $450. Everything before that is just stuff from Hong Kong and China and sellers with bad feedback which I will not trust (chance of getting cheap crappy version of a real DSLR).

What other Australian websites can I search that are reliable and sell cheap DSLRs?
Also, what models of DSLRs are the cheapest?