Suggestion 65. Squad 1.

Sales

Untrace

https://backpack.tf/profiles/76561198187108663#!/compare/1602547200/1602633600

https://backpack.tf/profiles/76561198148021922#!/compare/1602547200/1602892800

Sold for 4 keys

https://backpack.tf/profiles/76561198035700550#!/compare/1602633600/1602720000

https://backpack.tf/profiles/76561198187108663#!/compare/1602633600/1602720000

Sold for 5 keys

https://backpack.tf/profiles/76561198860499173#!/compare/1605484800/1605657600

https://backpack.tf/profiles/76561198091502579#!/compare/1605657600/1605744000

Untrace

https://backpack.tf/profiles/76561198091502579#!/compare/1605744000/1605830400

https://backpack.tf/profiles/76561198171048015#!/compare/1605571200/1605744000

Marketplace Sales

https://marketplace.tf/items/tf2/30614;5;u3034

12.67 on Oct 3

Keys were 1.85, 12.67/1.85= 6.8, rounding to 7

https://manic.tf/keyprice/?at=2020-10-03

10 on Oct 13

Keys were 1.88, 10/1.88= 5.32, rounding to 5.5

https://manic.tf/keyprice/?at=2020-10-13

18.81 on Oct 30

Keys were 1.84, 18.81/1.84= 10.22, rounding to 10

https://manic.tf/keyprice/?at=2020-10-30

13 on Nov 25

Keys were 1.75, 13/1.75= 7.43, rounding to 7.5

https://manic.tf/keyprice/?at=2020-11-25

14.99 on Nov 28

Keys were 1.76, 14.99/1.76= 8.5

https://manic.tf/keyprice/?at=2020-11-28

Classifieds

https://gyazo.com/3d1f5385a598c06d42867e2c2dc1c509

Summary

Sales at 4, 5, 5.5, 7, 7.5, 8.5, and 10.

Conclusion

4-10 could work, but id rather exclude either sale on both low and high ends, to make this a better looking range.

Going with 5-8.5 here.