I've been offered a Bud for 5 of my Ebenezers. I didn't take their offer. 12.55 seems legit. Price is rising.

still easy to find for 4 keys

http://www.tf2outpost.com/trade/1288900

http://www.tf2outpost.com/trade/3125752

This is generally a less-liked xmas hat compared to the BMOC. I don't see it rising to 5 keys since I've seen plenty being sold at 4 keys as ViceVersa has pointed out. I see you have just traded for one which is nice.