This is just too confusing for me.

Sold for 44 Keys(3.5 at the time)

http://backpack.tf/profiles/76561198045002242?time=1418718522 -> http://backpack.tf/profiles/76561198045002242?time=1418803200

http://www.tf2outpost.com/trade/24073491

Added 5 Keys for a Disco Beat Down L'Homme Burglerre(4.3, Offered)(3.9 Total)(Valued at 3.1 due to seller's B/O)

http://backpack.tf/profiles/76561198120467518?time=1424591813 -> http://backpack.tf/profiles/76561198120467518?time=1424592000

http://www.tf2outpost.com/trade/25097712

Well some things are to note about this suggestion, the guy who bought it for 3.5 pure, relisted it at 2.85: http://www.tf2outpost.com/trade/24418798 and then quicksold it along with an aces aviator for a measly 26 Keys: http://backpack.tf/profiles/76561198118260728?time=1420358400

And the guy on the second sale currently values it at 2.9 Buds: http://www.tf2outpost.com/trade/25261551

Going to go with the two B/Os as the low end, and keep 3.5 mainly for being pure. 2.9-3.5 should work.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.