The Auburn Street store had two all-time record sales days last week, more than doubling its daily targets and selling hundreds of dollars worth of stock.

Volunteers have been run off their feet serving customers, as well as sorting through piles of donations that often flood in this time of year.

Lifeline South Coast executive director Grahame Gould put the results down to a shift in people's spending patterns.

"People are spending their money differently this Christmas," he said.

"They're moving away from buying new things and wanting to give a second-hand gift instead.

"I think people like the idea of giving someone an unusual piece of clothing or a rare book, it's something that bit different and a little more interesting."

Mr Gould said second-hand shopping had its benefits, providing a gift to more than just the recipient.

"It's a gift to the environment because you're reducing landfill and reusing, which is always a plus," he said.

"It's also a gift to Lifeline because we use the funds from our stores to save lives so it's fantastic for us; every little bit helps".

The demand for stock had left shelves a little bare, prompting a call for donations.

Mr Gould said stores were always looking for used books, designer clothes and household items.

"This time of year is a good chance to clean out the cupboards. People often find things they haven't used or might have only worn once or twice that would make great donations."