Definitely aren't selling for 2 keys any more. There are heaps unsold for lower than that etc.

Classifieds

http://backpack.tf/classifieds/search/964/11/0 - Several unsold for 1 key

Unsold for 2 keys

http://www.tf2outpost.com/trade/7620583 - Unsold for 2 keys

http://www.tf2outpost.com/trade/7685762 - Unsold for 2 keys

http://www.tf2outpost.com/trade/7598652 - Unsold for 2 keys

http://www.tf2outpost.com/trade/7583069 - Unsold for 2 keys

Unsold for 1.5 keys

http://www.tf2outpost.com/trade/7553063 - Unsold for 1.5 keys

http://www.tf2outpost.com/trade/7665841 - Unsold for 1.5 keys

Sold/Selling for 1 key

http://www.tf2outpost.com/trade/7670000 - Selling for 1 key

http://www.tf2outpost.com/trade/7684449 - Selling for 1 key

http://www.tf2outpost.com/trade/7592020 - Sold for 1 key

http://www.tf2outpost.com/trade/7659681 - Sold for 1 key

Pretty clear that the top range has dropped out of the market.