:Thinking:

Sale 1: https://backpack.tf/profiles/76561198019556015#!/compare/1492041600/1493251200

Sold with 2 pure for a Clean Stormy Storm Executioner (28 keys)

28 - 2 = 26

Mini for the Exe: https://backpack.tf/suggestion/595da0b7cf6c757c831e7b52

Additional by the King:

The seller you used was extremely young, and now I can't find out if it sold. You also missed another sale at the time:

Appears to have sold for ~21 keys. The T-Watt Tam was quicksold to a bot, then part of the keys were used for the Belt.

https://backpack.tf/profiles/76561198125791160#!/compare/1498003200/1498089600 ---- Keys don't show up here

https://backpack.tf/profiles/76561198114299315#!/compare/1497830400/1498089600

Other sales: This could be used for the Brainiac

https://backpack.tf/profiles/76561198114299315#!/compare/1499990400/1500076800

Sold for 17 keys

https://backpack.tf/profiles/76561198068780534#!/compare/1501632000/1501718400

https://backpack.tf/profiles/76561198002757046#!/compare/1501632000/1501718400

http://www.tf2outpost.com/trade/29299404

http://www.tf2outpost.com/trade/29279939 ----- Took a while to sell

Quicksold for ~14 keys

https://backpack.tf/profiles/76561198068780534#!/compare/1501804800/1501891200

So there are sales at 17, 21, 28. The Brainiac sale will probably be around 21 as well, so you can remove one sale in both ends and resuggest at 21 flat.

21 flat it is!