Clash on Chief!

Sale #1

https://backpack.tf/profiles/76561198418740133#!/compare/1602028800/1602115200

Vivid Plasma Voodoo JuJu (17 Keys) + Strange Part: Buildings Destroyed (2.12 Keys) + Strange Harry (1.42 Keys) + Strange Festive Black Box (2.54 Keys) + 5 Keys + Strange Battalion's Backup (13.22 ref) + 17 ref = 28.6 Keys, rounding to 29 Keys [needs mini for Juju]

Sale #2

https://backpack.tf/profiles/76561198091740704#!/compare/1602633600/1602720000

Vivid Plasma Chieftain's Challenge (26 Keys) + 19 Keys = 45 Keys for Vivid Plasma Brown Bomber [can use mini]

Sale #3

https://backpack.tf/profiles/76561198140584551#!/compare/1602633600/1602720000

Sale for 22 Keys, excluding quicksell.

Sale #3

https://backpack.tf/profiles/76561198063403028#!/compare/1603670400/1603929600

Vivid Plasma Chieftain's Challenge (26 Keys) + 18 Keys = 44 Keys for Strange Green Energy Modest Metal Pile of Scrap [can use mini for strange]

Marketplace sales and the others were outdated.

Summary

Sales at

22 Keys, excluding.

26 Keys

26 Keys

29 Keys

Conclusion

I'd suggest a price range from 26-29 Keys (avg. 27.5 Keys rounding to 28 Keys), thanks!