I don't think this price needs to ingrease any further.

10.5 keys doesn't seem to be happening, and even 10 is a hard sell.

http://www.tf2outpost.com/trade/14899181 - 10 keys, 6 days.

http://www.tf2outpost.com/trade/14829891 - B/O 10 keys, 1 week

http://www.tf2outpost.com/trade/14968486 - 10.5 keys, 2 days, willing to do 10.

http://www.tf2outpost.com/trade/15029937 - 10 keys < 1 day

http://www.tf2outpost.com/trade/15043394 - 10 keys, 1 hour

http://www.tf2outpost.com/trade/15042370 - 10 keys, 3 hours

http://www.tf2outpost.com/trade/14891921 - 9.5 recently changed from 10, 6 days

http://www.tf2outpost.com/trade/14979418 - 10 keys sold

http://www.tf2outpost.com/trade/15020768 - 10 keys sold

http://www.tf2outpost.com/trade/15036151 - 10 keys

http://www.tf2outpost.com/trade/15032227 - 10 keys, 11 hours

http://www.tf2outpost.com/trade/14992104 - 10.5 keys, 1 day

http://www.tf2outpost.com/trade/15029503 - 10.5 keys, young.

http://www.tf2outpost.com/trade/15012249 - 10.5 keys, 1 day.

http://www.tf2outpost.com/trade/14978762 - 10.5 keys, 2 days.

http://www.tf2outpost.com/trade/15039623 - 9 keys 5 ref quicksold

Why pay 10.5 keys when 10 is readily avaiable?

Counter proof welcome. Not going to lie, I stole this proof from the other suggestion.