Ye exactly it should rise

Sold for 35 keys = ~1.9

http://www.tf2outpost.com/trade/21686583

Sold for a Miami Nights Big Elfin Deal (~1.3) and a Smoking Helmet Without a Home (~0.7) = ~2 but B/O of ~1.7

http://www.tf2outpost.com/trade/21433999 (Milkman)

http://www.tf2outpost.com/trade/21485954 (HWaH)

http://www.tf2outpost.com/trade/21559587 (Elfin)

Sold for 18 keys + 3 CS:GO Operation Phoenix keys + Bills in a couple days= ~1.5

http://www.tf2outpost.com/trade/22234563

http://steamcommunity.com/market/listings/730/Operation%20Phoenix%20Case%20Key (The CSGO keys seem to selling for a bit more than TF2 keys)

Sellers who aren't me and list a price:

http://www.tf2outpost.com/trade/22226154 - 1.7, young

http://www.tf2outpost.com/trade/22271194 ~1.7, young