David Thomas, director TNS New Zealand, said the survey gauged how people were feeling about Christmas this year.
"It's good to see that even after a rough year, Kiwis still have their charitable spirit," he said. "Even if gifts don't hit the mark this year, at least they won't be going to waste."
Meanwhile, Trade Me spokesman Paul Ford said its research showed that two-thirds of the people it surveyed in 2009 thought it was all right to sell unwanted gifts.
Last year the website had 12,000 items added on Christmas Day - with the largest volume of goods coming online between 4pm and 8pm.
Linen, electric shavers, CDs, ties, chocolates and kitchen appliances rated highly among the list of goods being offered on the website on Christmas Day.
"You could argue a bunch of that were presents that were seen but not opened or played with and people decided it wasn't for them or they were double-ups," said Mr Ford.
"It's interesting because the number of listings go down just before Christmas but there's a very definite bounce back on Boxing Day. Susan Boyle has just put out another CD so you could expect to see a few of those online."
The TNS research showed that 31 per cent of respondents intended to donate to a charity this Christmas.
And of those who regularly give to charity at this time of year, 22 per cent say they're going to give more than in previous years.