http://www.tf2outpost.com/trade/23518232#latest - Sold for Orbiting Fire El Jefe (1.6 buds) + Smoking Doctor's Sack (13 keys) (13/15.5 = 0.84 + 1.6 = 2.44*0.9 = 2.2 buds

http://i.imgur.com/UwPP65c.png - Sold for Phosphorus Janissary Ketche (1.6 buds), FORCED 4-pack (4.5 keys), Serious Sam 3: BFE 4-pack (4 keys), Awesomenauts 3-pack (2 keys), Frozen Synapse 2-pack (2 keys) = 2.41 buds * 0.9 = 2.17 buds

http://www.tf2outpost.com/trade/23607262 - Sold for Stormy Storm Grenadier's Softcap (1.3*0.9 = 1.2 buds

http://i.imgur.com/OZhHcF6.png - Sold for 93 ref, Strange Killstreak Sniper Rifle (~4 ref), Strange Dead Ringer (1 key), and an Uncraftable Lucky No. 42 (3-3.5 keys) (0.4 + 1 + 3.5 = 4.9*0.9 = 4.4 keys + 9.3 keys = 13.7 keys or 0.9 buds - Outlier

[Mangolango did ALL proof above, credits to him]

http://www.tf2outpost.com/trade/23664907 - spec ks SF sniper rifle + sweets? definitely 1.5+ but i'm unsure how much was added

http://www.tf2outpost.com/trade/23655468 - there are quickbuyers on the aussie nade at 24 keys. this is ~2.1 in pure

http://www.tf2outpost.com/trade/23643196 - sold fast for 1.6 pure

This is selling easily at 1.5-1.6 in pure - strange festives, aussies, and pure keys. I think a range of ~1.6-2.2 would be better. [polar's comment]

http://backpack.tf/vote/id/545efa4fba8d889e528b4cbb#comment-547508a9b98d88ae0e8b46de