The lady from Port Adelaide had purchased two normal recreation tickets for Thursday evening's Set for Life draw from the Plympton Newsagency and was mistakenly given a 3rd, which turned out to have the successful numbers.
The lady will now obtain $20,000 a month for the subsequent 20 years, which is able to come to a complete of $4.8 million.
"So glad as nicely yeah. Very glad, and likewise very, very excited," proprietor of the Plympton Newsagency Holly He instructed 9News.
Plympton Newsagency worker Ashley Qui mentioned she's nonetheless in shock.
"We obtained a division one winner within the store and I nonetheless cannot imagine it," Ms Qui mentioned.
"I talked with the winner, and she or he tells us how glad she was and the way she will change her life."
The winner has been an everyday buyer on the newsagency and she or he returned to share a bit of of her winnings with the house owners.
Ally Ramsamy from The Lott — the lotteries supervisor in most of Australia — mentioned she has spoken with the winner, who has begun planning how she'll spend her cash.
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"She mentioned she needed to share it along with her household, her pals after which donate to the charities that basically imply one thing to her," Ms Ramsamy mentioned.