I definitely do a lot of Christmas shopping on Ebay. Often, I will hear of something that a family member is requesting. My first stop is Ebay to see if I can get it for a better deal.
I start early since I often need time to find *just* the right items.
I always buy from people with only high feedback. I got burned once when I bought from someone who had less than 10 sales total. It took me weeks (and two nastygrams from me) to finally get my item.
So, I am now sticking with more experienced sellers.