One single YouTuber can have such a big impact on a market...

Classifieds (As of 8:30 PM EST):

1 at 1 key 14 ref/1.85 keys, and 10 at 2 keys! http://prntscr.com/6d8uo5

Recent sales:

http://www.tf2outpost.com/trade/25257561 Quicksold for "backpack.tf prices"

http://www.tf2outpost.com/trade/25238095 1.9 keys

http://www.tf2outpost.com/trade/25269438 2 keys

http://www.tf2outpost.com/trade/25247997 2 keys

http://www.tf2outpost.com/trade/25205034 2 keys

http://www.tf2outpost.com/trade/25219020 2 keys

http://www.tf2outpost.com/trade/25261146 2 keys

http://www.tf2outpost.com/trade/25230482 Sold at least 1 at 2 keys

Sellers:

http://www.tf2outpost.com/trade/25268485 1.4 keys, outlier because of all the 1.5 buyers and because it's not bumped that well.

http://www.tf2outpost.com/trade/25241889 1.8 keys

Buyers:

http://www.tf2outpost.com/trade/25268603 1.5 keys

http://www.tf2outpost.com/trade/23834865 1.5 keys

http://www.tf2outpost.com/trade/25227991 1.5 keys

With all these sales from 1.9 keys to 2 keys, the seller at 1.8 keys, and the 1.5 key quickbuyers to show the current price is too low, the more conservative 1.8 to 2 key range should be alright. LLAP my friends.