How much do iPhone 4S go for on eBay during Christmas time?

This is sort of a complicated question but I was wondering if I should sell my iPhone 4S now or during Christmas time. I'm upgrading to a 5 and wondering if the go for more money the closer to Christmas?

With tech products you always sell sooner rather then later. Plus you want to actually sell it, you have to find a buyer. Try craigslist also, I've had success selling stuff on CL.