Even though the previous suggestion was recently accepted, I feel like the lower end is a tad low. Especially with the recent trades that were committed for the hats, the previous suggestion's price range needs a bit of a readjustment.

Current Solds that I've Found and Contributed:

1) http://www.tf2outpost.com/trade/22658889 - 44 Keys or ~2.6 Buds. (Had a c/o of 41 keys prior.)

Proof of Sold: http://i.gyazo.com/e0e0346dd2d523d9860f16e79ca15f79.png

2) http://www.tf2outpost.com/trade/22414951 - 41 Keys + 2 Games (2.4 Buds, not including games. 2.5 Buds, if including.)

Proof of Sold: http://www.tf2outpost.com/trade/22618824 (Check the Comments.)

From Prior Suggestion Solds: (*Some proof included from the previous suggestion, since it was sufficient.)

2) http://www.tf2outpost.com/trade/21504800 - sold for aces tin gallon (1 * 0.9 = 0.9) + C9 norman (2 * 0.9 = 1.8) ~ 2.7

3) http://www.tf2outpost.com/trade/22363186 - sold along with ghosts cheiftan (2.8 * 0.9) ~ 2.5

4) http://i.imgur.com/YSPr5Ya.png - Sold for 2 buds (Uncertain - Possible Outlier)

5) http://gyazo.com/a1cbba052a823fa31205c7edfd5dabd2 - Sold for an unusual offer of ~3.2 buds. (C9 Norman + Ace's High Robo Texas)

Current Unsolds on the Market:

1) http://www.tf2outpost.com/trade/22602925 - b/o of 3 Buds - 3 Days Old.

2) http://www.tf2outpost.com/trade/22618824 - b/o of 3 Buds - 3 Days Old.

Major Note: The Solds I've provided and the previous suggestion has a very different skewing on the bud prices. His suggestion had bud prices where they were originally 19 keys, but mine has been provided when they were 17 keys. I figured to point this out ahead of time.