There's a lot of sellers at 9 right now, which is within the range, but there are a lot of other sellers that are below that range. So here comes the proof:

Classifieds (at the time of posting):

x1 8 ref

x6 8.33 ref

x1 8.44 ref

x2 8.66 ref

Sellers:

9 ref:

http://www.tf2outpost.com/trade/25748746

http://www.tf2outpost.com/trade/24277980

http://www.tf2outpost.com/trade/24165257

http://www.tf2outpost.com/trade/25708012

http://www.tf2outpost.com/trade/25707490

http://www.tf2outpost.com/trade/25740522

http://www.tf2outpost.com/trade/24890149

http://www.tf2outpost.com/trade/25696451

8.88 ref:

http://www.tf2outpost.com/trade/25739974

8.77 ref:

http://www.tf2outpost.com/trade/25568355

http://www.tf2outpost.com/trade/25703987

8.66 ref:

http://www.tf2outpost.com/trade/23930266

http://www.tf2outpost.com/trade/25308923

http://www.tf2outpost.com/trade/25714596

http://www.tf2outpost.com/trade/25716138

http://www.tf2outpost.com/trade/25713179

8.44 ref:

http://www.tf2outpost.com/trade/25739096 (links to trade.tf for prices --> http://www.trade.tf/user/mybot/trades/76561198134523989

8.33 ref:

http://www.tf2outpost.com/trade/25702551

http://www.tf2outpost.com/trade/25745927

http://www.tf2outpost.com/trade/25732648

http://www.tf2outpost.com/trade/25719475

http://www.tf2outpost.com/trade/25220065

8 ref:

http://www.tf2outpost.com/trade/25488439

http://www.tf2outpost.com/trade/25475437

http://www.tf2outpost.com/trade/25742361

http://www.tf2outpost.com/trade/25728074

Analysis: There are many sellers under the range of 8.88-9 ref, especially at 8.66 and 8.33. There are still many sellers at 9 ref, so it should still be in the range, but due to the amount of sellers below this, the range definitely needs to be larger and moving downwards.

P.S. Any counter-proof, suggestions, and/or critiques are happily accepted; I'm pretty new at this and need to figure out where I'm falling short on proof. Thanks :)