I trade these quite often and I think it needs a raise.

Classifieds:

http://prntscr.com/e3gxrk

No sellers currently, the stn.tf bots sell for 1.2 keys if they have any: http://prntscr.com/e3gyoo

Buyers at 1.05 keys and lower, so they don't counter.

Sales:

http://prntscr.com/e3gz9w : for 1 key and 4.11 (1.15 keys)

http://prntscr.com/e3gzpv : for the taunt: Mannrobics (worth 1.15 keys : http://prntscr.com/e3h093)

http://prntscr.com/e3h0kn : for 1 key and 4 ref (1.15 keys)

http://prntscr.com/e3h147 : for 30.55 ref (at the time about 1 key and 3.33, rounded to 1.15 keys)

Hope this is enough proof :), additional proof or criticism welcome