Taking last 2 months (August 22 on)

Sale 1:

https://backpack.tf/profiles/76561198156001027#!/compare/1566777600/1566950400

https://backpack.tf/profiles/76561198095022965#!/compare/1566864000/1566950400

Sold with 5 keys for Stormy Festivizer(14.5)

Total is 9.5 keys

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

B/O of 10 keys

Sale 2:

https://backpack.tf/profiles/76561198095022965#!/compare/1569456000/1569542400

https://backpack.tf/profiles/76561198032368121#!/compare/1562803200/1569542400

Sold for 10 keys

Sale 3:

https://backpack.tf/profiles/76561198428134599#!/compare/1566345600/1566864000

https://backpack.tf/profiles/76561198213234076#!/compare/1566777600/1566864000

Sold for ~7 keys

Sale 4:

https://backpack.tf/profiles/76561198213234076#!/compare/1566777600/1566864000

https://backpack.tf/profiles/76561198081870327#!/compare/1566777600/1566864000

Sold for C9 Bloke's (9.5)

Sale 5:

https://backpack.tf/profiles/76561198081870327#!/compare/1568073600/1568764800

https://backpack.tf/profiles/76561198429900672#!/compare/1568505600/1568678400

SCM

sale 6:

https://backpack.tf/profiles/76561198204709704#!/compare/1566604800/1566691200

https://backpack.tf/profiles/76561198953637100#!/compare/1566604800/1566691200

Bulk

sale 7:

https://backpack.tf/profiles/76561198953637100#!/compare/1567209600/1567296000

https://backpack.tf/profiles/76561198093788180#!/compare/1567296000/1567382400

Bulk QS(?)

Sale 8:

https://backpack.tf/profiles/76561198093788180#!/compare/1567296000/1567382400

https://backpack.tf/profiles/76561198337734785#!/compare/1567296000/1567382400

QS

Sale 9:

https://backpack.tf/profiles/76561198079841650#!/compare/1570492800/1570579200

https://backpack.tf/profiles/76561198805760331#!/compare/1570406400/1570492800

https://backpack.tf/profiles/76561198134546405#!/compare/1570406400/1570492800

https://backpack.tf/profiles/76561198109506971#!/compare/1570320000/1570492800

https://backpack.tf/profiles/76561198867708045#!/compare/1570579200/1571356800

https://backpack.tf/profiles/76561198067025442#!/compare/1570406400/1570579200

https://backpack.tf/profiles/76561198867708045#!/compare/1570060800/1570579200

https://backpack.tf/profiles/76561198067025442#!/compare/1570406400/1570579200

https://backpack.tf/profiles/76561198950621219#!/compare/1570406400/1570579200

https://backpack.tf/profiles/76561198801634335#!/compare/1570492800/1570579200

https://backpack.tf/profiles/76561198318322815#!/compare/1570579200/1570665600

https://backpack.tf/profiles/76561198258264645#!/compare/1570492800/1570665600

Untrace

Sale 10:

https://backpack.tf/profiles/76561198258264645#!/compare/1570752000/1570838400

https://backpack.tf/profiles/76561198872628170#!/compare/1570665600/1570752000

https://backpack.tf/profiles/76561198111049983#!/compare/1571011200/1571356800

Untrace / SCM

Sale 11:

https://marketplace.tf/items/tf2/379;5;u56

$24.12 / $1.81 = 13.33 keys

https://backpack.tf/item/7956335325

Total sales @:

7, 9.5, 9.5, 10, 13.33 keys

buyers up to 7 keys,

seller for ~10 keys

calling 7 low,

13.33 high,

taking 9.5 - 10 keys