Many sales for this beauty:

Sale 1) 600 usd, credits to j58

https://marketplace.tf/items/30976;5;u116

343 keys

Sale 2) SCM, seller/buyer apparently will not give more info to confirm this sale

https://backpack.tf/item/7247106162

Sale 3) purple energy tough stuff muffs 103 keys indate + burning flames chieftain's challenge outdated at 92 keys

https://backpack.tf/profiles/76561198346664888#!/compare/1542672000/1542758400

Sale 4) It's a secret Well-rounded rifleman, outdated at 313 keys

https://backpack.tf/profiles/76561198346664888#!/compare/1542758400/1542844800

Sale 5) Untrace

https://backpack.tf/profiles/76561198852937894#!/compare/1542067200/1542153600

Sale 6) 343 keys

https://backpack.tf/profiles/76561198391011833#!/compare/1543104000/1543449600

https://backpack.tf/profiles/76561198108331387#!/compare/1543363200/1543449600

https://backpack.tf/item/7303632892

Mini for chieftain's challenge:

https://marketplace.tf/items/250;5;u13

1) 167/1.74 = 96 keys

2) 110 usd/1.72 = 64 keys

☆Take 96 and i will round to 93 due to there is a seller at 89 keys

Mini for secret Well-rounded rifleman:

1) Scorching BoA active suggestion at 375 keys

https://backpack.tf/profiles/76561198109141608#!/compare/1540166400/1540252800

2) ? Unpriced items + keys

https://backpack.tf/profiles/76561198136220673#!/compare/1541894400/1542067200

3) 230 keys

https://backpack.tf/profiles/76561198191964430#!/compare/1541980800/1542067200

☆Take active BoA (375 keys), 230 is low

Summary:

Sale 1) 343 keys

Sale 3) 196 keys = excluded

Sale 4) 375 keys

Sale 6) 343 keys

343 and 375

New price: 360 keys