1986 Australia Proof Fifty 50c Cent Coin - PCGS Graded PR70DCAM On Ebay https://www.ebay.com.au/itm/1986-Australia-Proof-Fifty-50c-Cent-Coin-PCGS-Graded-PR70DCAM?
The eBay seller must be dreaming to expect anyone to buy at the offered price for this coin (and most of the other items for sale).