With the Canadian dollar so strong right now, and most of my product coming from the US, I have been stocking up big time, (and not just for Christmas).
I love the Paypal account for that reason- when our CAD is high (like it is right now), I buy up tons of stock with the US dollars in the Paypal account, and when its really low, I transfer it to my CAD business account.
And personally, I don't waste my time changing the look of my listings for Xmas- I find it better to have a few more sales, and put a "Happy Holidays" type of greeting in my "ME" page. Xmas comes and goes so fast that by the time you make changes, it's time to change 'em back again!
My website will get a Xmas home page "window dressing" but thats about it. But if you are going to make Xmas changes, nows the time to get started, as internet shoppers will begin their shopping in the next few weeks, as they always worry about shipping times and being sure that their gifts arrive in good time before the big day.
Cheers,
AXE