Put everything on sale, the bigger the discount the greater increase in conversion rate.
It works every time.
There is a problem doing that though.
It will kill your gross profit (profit after cost of paying for your product) which will mean less profit and most likely less cash in the bank.
If you need to clear stock quickly to pay for new stock or something else important (not hiring a Lamborghini to pretend you’re doing well) then discounting for a short period is the way to go.
However, to build a truly great Aussie eCommerce business you need to keep gross margin high by finding other ways to sell your product without regular discounting.