Resuggesting due to a new sale, and the other sale becoming outdated, thank you Scourge: https://backpack.tf/suggestion/5f4c8c4cc2a84757085ca602

Sales

Sale 1: Sold for 7 keys

https://backpack.tf/profiles/76561198024999234#!/compare/1597622400/1598054400

https://backpack.tf/profiles/76561198839890152#!/compare/1597449600/1597622400

Sale 2: Untrace/Bulk

https://backpack.tf/profiles/76561198299169464#!/compare/1578614400/1591488000

https://backpack.tf/profiles/76561198024999234#!/compare/1591401600/1591660800

Sale 3: Looks like its ~5 keys in items, but i have a feeling keys from CAPPER sale were involved.

https://backpack.tf/profiles/76561198141187659#!/compare/1600560000/1600646400

https://backpack.tf/profiles/76561198247063082#!/compare/1600560000/1600646400

CAPPEr sale had a B/O of 8 keys (piu piu)

Marketplace sales

https://marketplace.tf/items/tf2/30839;5;u3020

June

$10 on June 8 (10/1.98 = 5~)

https://manic.tf/keyprice/?at=2020-06-08

Listings during the time: https://bot.tf/stats/listings/MNR8K0XQ

https://bot.tf/stats/listings/4ZPRG6G1

August

$16.26 on August 18 (16.26/1.79 = 9~)

https://manic.tf/keyprice/?at=2020-08-18

https://backpack.tf/item/5523026324

Listings during the time: https://bot.tf/stats/listings/MNR5E168

https://bot.tf/stats/listings/4ZP2NXX1

$14.99 / $1.85 = 8.10 keys

https://backpack.tf/item/6476769934

Other exchanges with mannco store.

https://backpack.tf/item/5360211522

Current Classifieds

https://backpack.tf/classifieds?item=Taunt:%20Didgeridrongo&quality=5&tradable=1&craftable=1&australium=-1&particle=3020&killstreak_tier=0

https://gyazo.com/095d45b69531d542e140e79281adda0a

Summary

Sales at 7 and possibly 8.

Marketplace sales at 5, 8, and 9.

Conclusion

5 is outdated now. 9 is high due to past sellers at less. Excluding 5, 9.

Going with 7-8 here.

Take it easy.