People selling at a key used as my links above. Below are a mix of people who have bought for 2 ref in the past and are currently trying to buy for 2 ref.

http://www.tf2outpost.com/trade/5086965

http://www.tf2outpost.com/trade/5087324

http://www.tf2outpost.com/trade/5093883

http://www.tf2outpost.com/trade/5078793

http://www.tf2outpost.com/trade/5088069

http://www.tf2outpost.com/trade/5086693

Remember, if you disagree with these prices, counter-proof speaks worlds louder than downvotes! These are difficult items to price right now, the more evidence that can be provided, whether supporting or denying the suggestion, the better.