Paypal is running a 12 Days of Surprises promotion and Xbox is the featured brand for December 8. You can find more information by visiting www.paypal.com/12days
Sorry this post is a little cryptic but that is all of the information posted as of now.
There are discounts from other merchants through this program - thanks to vikasbpai for the list:
12/1: eBay (Up to 85% off)
12/2: Zales: The Diamond Store
12/3: wellbots: #1 on smart products
12/4: Withings: Part of Nokia
12/7: Dick's Sporting goods
12/10: APL (Athletic Propulsion Labs)
12/11: Man Crates
Also, I am sorry that Paypal hates so many of you...LOL. I never dreamed that it would be YMMV - thanks to thorbahn3 for adding YMMV to the title.