Seem to be price matching someone, .45 is an odd price ending for Dan Murphy's.
Props to @jazzza from this thread https://www.ozbargain.com.au/node/834229
https://www.danmurphys.com.au/product/DM_902430/bacardi-cart… - Bacardi White 1L - $52.45
https://www.danmurphys.com.au/product/DM_526719/tanqueray-lo… - Tanquerey Gin 1L - $55.45
https://www.danmurphys.com.au/product/DM_828366/captain-morg… - Captain Morgan Spiced Rum 1L - $49.95
https://www.danmurphys.com.au/product/DM_724017/grey-goose-o… - Grey Goose 1L - $74.45
https://www.danmurphys.com.au/product/DM_82011/cointreau-ora… - Cointreau 1L - $64.45
https://www.danmurphys.com.au/product/DM_915914/canadian-clu… - Canadian Club 1L - $51.45
https://www.danmurphys.com.au/product/DM_43650/smirnoff-red-… - Smirnoff 1.125L - $53.45
Showing normal prices for me in SA.