Don't know if it's the same for Eastern Canada but here on the 'wet coast' some people look forward to going shopping on Boxing Day more than they look forward to Xmas. Many of the big retailers deep-discount stock that hasn't sold and people line up outside the stores from the wee hours of the morning to try to be one of the first through the doors to get the stuff they didn't get for Christmas. I would hazard a wild guess that the climate here might be a little more favorable for this kind of activity. 😉 It certainly will be this year; forecast is for rain on Christmas and clearing up to be sunny again on Boxing Day.
Getting back on topic, last year I found the after-Xmas-pre-New-Year's sales surprisingly good. Seems a lot of people who bought for others before Xmas came back to buy for themselves after Xmas. Like a lot of things on eBay, it all depends on what you're selling.
Cheers,
Ernie.