Ebay has not been working for years. 
TECH department should be ashamed of their work on this site.
Have sent multipal emails to Ebay but ignore them.

eg
HOW do i find items listed for sale in WA ... Western Australia. IF IT DOES NOT WORK

None of the www.ebay.com.au, search refinements work.

If I ADVANCE SEARCH Located my postcode 50 km of 6162

It comes up with Hong Kong, South Australia, Victoria Australia, NSW ... SO VERY ANNOYING

ALL BUT WA, Western Australia

Even if I search Australia Only ... its still returns multipal ads for overseas ... SO ANNOYING
Can I refine the Australia Only search to Western Australia  only ... NO, as postcode in advance search does NOT WORK