Sale 1:

https://backpack.tf/profiles/76561198115371318#!/compare/1497398400/1497484800

= ?

Sale 2:

https://backpack.tf/profiles/76561198141553219#!/compare/1497312000/1497484800

= It’s a puzzle to me Smokey Sombrero(21) + ~1.5 keys in sweets

Sale 3:

https://backpack.tf/profiles/76561198080179568#!/compare/1495152000/1495238400

= 22 keys pure

Sale 4:

https://backpack.tf/profiles/76561198202446119#!/compare/1496707200/1496793600

= Duped Green Energy Bombing Run(26) + ~2 keys in sweets.

Capping 21 key B/O: http://www.tf2outpost.com/trade/29200505

Sale 5:

https://backpack.tf/profiles/76561198172224923#!/compare/1497398400/1497744000

= ?

Sale 6:

https://backpack.tf/profiles/76561198153789411#!/compare/1497571200/1497657600

= Outlier

Sale 7:

https://backpack.tf/profiles/76561198153789411#!/compare/1498262400/1498348800

= Bulk, should be used on the Defiant Spartan

Sale 8:

https://backpack.tf/profiles/76561198080271642#!/compare/1498262400/1498348800

= Should be used on Modest

Sales we have here: 21,22,22.5. Rounding the 22.5 key sale to 23 and going with 21-23.