First of all I'm not some person who just wants keys to go down I'm fine if they go up or down but I have some proof of people buying keys for lower prices

9.33

http://www.tf2outpost.com/trade/23329830

http://www.tf2outpost.com/trade/23081690

http://www.tf2outpost.com/trade/23197630

http://www.tf2outpost.com/trade/23290929

http://www.tf2outpost.com/trade/23307748

http://www.tf2outpost.com/trade/23345098

http://www.tf2outpost.com/trade/23310341

http://www.tf2outpost.com/trade/23342659

http://www.tf2outpost.com/trade/23274057

http://www.tf2outpost.com/trade/23341161

9 ref

http://www.tf2outpost.com/trade/23353625

http://www.tf2outpost.com/trade/23268192

http://www.tf2outpost.com/trade/23024724 (Buying 2 keys for 18 ref 18/2=9)

http://www.tf2outpost.com/trade/23201623

http://www.tf2outpost.com/trade/23070036

http://www.tf2outpost.com/trade/22865379

http://www.tf2outpost.com/trade/22712030 (Buying other items as well)

http://www.tf2outpost.com/trade/23225743

http://www.tf2outpost.com/trade/23006185

Below 9 ref

http://www.tf2outpost.com/trade/22336419

http://www.tf2outpost.com/trade/22694120

I hope this is enough evidence but if it's not leave some comments telling me how I can improve for other price suggestions I may do in the future