Sale 1

http://backpack.tf/profiles/76561198087106385#!/compare/1494201600/1494288000

With ~3 keys for Subatomic Head of Air ( 20 days @15: http://screenshot.sh/oB6C0u83r5bXd ) = 12 keys

Sale 2

http://backpack.tf/profiles/76561198164388894#!/compare/1493942400/1494201600

for prof ks collector's Ubersaw ( seller @5 in classies: http://screenshot.sh/odTcsG17KNT4H ) = low

Sale 3

http://backpack.tf/profiles/76561197993383111#!/compare/1493337600/1493424000

12 pure

Sale 4

http://backpack.tf/profiles/76561198169028500#!/compare/1495929600/1496016000

With ~1 key for Prof ks F-T Cool Low Profile SMG

Note: No minis on SMG. Minimal Wear seller on outpost for 12 (http://www.tf2outpost.com/trade/29202304).

F-T is worse tier but it was prof ks so this sale should be around 12 keys. I know it's invalid, but just confrime 12 flat.

Sale 5

http://backpack.tf/profiles/76561198125247757#!/compare/1488844800/1488931200

Bulky

Sale 6

http://backpack.tf/profiles/76561198265300713#!/compare/1491523200/1491609600

Aussie blut (7) + Buds and 4 keys + strange killers exclusive (1) = 14 keys

Sale 7

http://backpack.tf/profiles/76561198061826706#!/compare/1491868800/1492128000

11 pure = qs

Sale 8

http://backpack.tf/profiles/76561198331066870#!/compare/1488931200/1489017600

Cash?

Summary

Okay, sales @ 11, 12, 12 ,14

11 is qs ( buyers @11: http://screenshot.sh/ouVymijpWW2Bl )

14 is high because of 2 months CLEAN unsold in classies @ 13: http://screenshot.sh/mMyxgFvK4qDo1

If 11 is qs and 13 is high, only responsiable flat is 12 :D

Also 2 sellers @ 12 (one clean and one duped): http://screenshot.sh/ov3gWR6uceybV