Sales

Sale 1: Sold for 79 keys

https://gyazo.com/5ec1c855cac61c8a9e50bf5ad5c349f4

https://backpack.tf/item/9414170828

The hat was listed from around August, and perhaps earlier: https://bot.tf/stats/listings/M0OKLZ9V

Sale 2: Bulk for Frostbite Triboniophorus Tyrannus

https://backpack.tf/profiles/76561198258937500#!/compare/1603929600/1604016000

https://backpack.tf/profiles/76561198086247757#!/compare/1603843200/1604016000

Going to use it over there.

Sale 3: Bulk for keys

https://backpack.tf/profiles/76561198067741299#!/compare/1604361600/1604448000

https://backpack.tf/profiles/76561198173442901#!/compare/1604361600/1604448000

Sale 4: Untrace

https://backpack.tf/profiles/76561198207413869#!/compare/1604102400/1604361600

https://backpack.tf/profiles/76561198067741299#!/compare/1604275200/1604361600

Sale 5: Sold with 15 keys for Morning Glory Caribbean Conqueror (47.5 keys)+ Strange Professional Killstreak Australium Rocket Launcher (66 keys)

https://backpack.tf/profiles/76561198164364636#!/compare/1604275200/1604361600

https://backpack.tf/profiles/76561198207413869#!/compare/1604102400/1604361600

66 + 47.5 = 113.5 - 15 = 98.5 rounding to 99 keys

Buyout was 100 keys

https://bot.tf/stats/listings/4671GW9R

Rocket Launcher has 4 sellers and 3 buyers at 66, going with 66.

https://backpack.tf/classifieds?item=Rocket%20Launcher&quality=11&tradable=1&craftable=1&australium=1&killstreak_tier=3

https://gyazo.com/ed974603552d47b5af05bf78604fff23

Sale 6: Traced 18 keys + 7 refined

https://backpack.tf/profiles/76561198258937500#!/compare/1604102400/1604188800

https://backpack.tf/profiles/76561198164364636#!/compare/1603843200/1604188800

Considering the buyout, it was probably for far more.

https://bot.tf/stats/listings/YDPD22Z5

Marketplace sales

https://marketplace.tf/items/tf2/30123;5;u13

Nothing recent.

Current Classifieds

https://backpack.tf/classifieds?item=Harmburg&quality=5&tradable=1&craftable=1&australium=-1&particle=13&killstreak_tier=0

https://gyazo.com/a7107b57b1df9b0b53f5037093482b76

Summary

Sales at 79 and 99.

Conclusion

Going with 79-99 here.

Take it easy.