The 639,730 to 1 odds of winning Second Division on a line were bet by 52 Rotorua shoppers.
The average payout of Second Division wins was $20,159.
According to Lotto, the city's biggest win in the last three years was a $3.4 million Big Wednesday win at Rotorua Pak'nSave.
The city's luckiest store since draws began in August 1987 - based on the number of First Division, Lotto Family and Big Wednesday wins - was Paper Plus in Central Mall, the Lotteries Commission said. The store has had 13 First Division winners.
Paper Plus Central owner Heather Jenkins said a lot of mall-goers made the effort to call in at the store because they'd heard of the winning record.
"We get a lot of regular customers and people who have come from out of town," she said.
The average Lotto player spent $20 on a Triple Dip, while groups would spend more than $100, she said.
The store had had its regular pre-Christmas rush and with a special Christmas Triple Dip being released tomorrow, Ms Jenkins expected the madness to continue.
"It's also the first year the mall has been completely open so we hope the buzz will continue past Christmas."
New Zealand Federation of Family Budgeting Services chief executive Raewyn Fox cautioned ticket buyers about the need to prioritise spending.
"We haven't had any major issues with Lotto, but the same goes for it, as for all discretionary spending - make sure you've paid the bills and bought the essentials first," she said.
In general, it seemed people were being quite careful and holding back on big purchases this Christmas, she said.
However, careful planning was as necessary as ever.
"Don't buy anything that's not affordable in your budget."
The numbers
Rotorua 2011/12 2012/13 2013/14
Lucky Dips, Power Dips, Triple Dips sold 582,279 506,360 533,654
Amount spent on dip tickets $8,555,802 $7,311,796 $8,018,519
1st Division winners 2 1 1
2nd Division winners 22 12 18
