Finally the time has come.

Recent sales from marketplace.tf

https://marketplace.tf/items/tf2/15121;15;w1;pk78;strange

[02/26] $33/1.75= 18.85 keys

https://marketplace.tf/items/tf2/15121;15;w1;pk78;strange;kt-1

[01/23] $13/1.83= 7.10 keys (low)

Steamcommunity sales [taking past month]

https://steamcommunity.com/market/listings/440/Strange%20Dressed%20to%20Kill%20Medi%20Gun%20%28Factory%20New%29

1) [04/07] $49.13/2.20 = 22.33 keys

2) [04/02] $31.48/2.18 = 14.44 keys

3) [03/20] $27.46/2.12 = 12.95 keys

4) [03/15] $32.84/2.13 = 15.41 keys

Buy order starting from $43.49 (ammount : 1)

Steamcommunity sales for specialized

https://steamcommunity.com/market/listings/440/Strange%20Specialized%20Killstreak%20Dressed%20to%20Kill%20Medi%20Gun%20%28Factory%20New%29

Buy orders around $25

1) [03/29] $57.50/2.18 = 26.37 keys

since theres a couple of buy orders around $25-$43 im counting every sale above that.