eBay Australia has celebrated its 15th birthday this week, and to mark the milestone the auction website has revealed some interesting statistics about the shopping patterns of its Australian customers.

Since 1999, eBay has been transforming the way Aussies shop, but the site has changed dramatically since its inception, where sales were predominantly auctions of quirky, collectible items.

Today, 85 per cent of all products on eBay are brand new, being sold primarily by businesses at a set “Buy It Now” price.

According to the survey conducted by the e-tailer earlier this year, buyers in NSW spend the most money on mobile devices in total, but Victorian buyers spend the greatest percentage of their money on mobile.

South Australians have proven to be the biggest night owls, shopping the latest out of all states, while West Australians are early morning shoppers, with most activity before 7am.

Northern Territory eBay users are the biggest spenders, while Queensland’s regional city, Toowoomba, is the country’s most active town, buying more items than anyone else in the whole of Australia.

“We are so proud of how far eBay has come in the past 15 years and the impact it has made on Australians’ everyday lives. It’s been a consumer-led evolution and we’ve innovated around their needs on behalf of our retail partners,” Jooman Park, MD of eBay Australia, said.

“It’s incredible to think that over eight million Australians are interacting with eBay every single month. Australians have embraced eBay. Over the past 15 years we have facilitated more than 681 million transactions and almost 60 per cent of all online shoppers in Australia bought something on eBay last year,” Park said.