Amazon is overrated. It will take 2 years to get any legs and then deal with logistics cost in australia. Aussiepost is not a cheap operator and others out there.
Priceline operates in FMG - fast moving goods market. Impulse buys.
The sister club or whatever entices women to come in. I know my wife does a lot of shopping at priceline without thought.
Also parmarcies are protected by the pharmacy guild.
BOOTs or MTS may give it a takeover.
I have always thought MTS will branch out beyond groceries and in to pharmacy its all about distribution and synergies.