According to the latest statistics from the NAB, Australia's online retail sales index fell by 1.4% at the end of the year (2018), down from 2.9% in November (2017), the first decline since December in December 2016.

Australia's National Bank economist Alan Oster and Brien McDonald believe that the December December sales index weakened due to the November large-scale shopping festival such as black Friday (Black Friday), Internet Monday (Cyber Monday) and fashion shopping night (Friday shopping night) and other large-scale promotional activities, so that consumers ahead of December shopping plan ahead of November.

According to statistics, Australian public sales last year totaled 28 billion 600 million Australian dollars, accounting for about 8.9% of the traditional physical retail sector. According to data, NSW has more than 11% Internet sales index, 10% growth in Vitoria, 7.5% growth in Queensland, 13.5% growth in West Australia, 8% growth in Nan'ao, 7% growth in Tasmania and 4% growth in Canberra, and 30% sales in northern territory only.

Economists say slow wage growth, high personal debt and weak housing market reduce Australian people's purchases of non essential commodities, prompting retail growth in December last year. Compared with the year December, the NAB retail sales index increased by 9% in December last year, while 7 industries in 8 industrial groups continued to grow, with only 2.1% of personal and entertainment goods falling. Sales of department stores, groceries and wines, media (music, books and periodicals), games and toys and takeaway food are far more than those of large furniture and household appliances, while sales of fashion and personal entertainment products are limited.