Sale 1:

https://backpack.tf/profiles/76561198261655432#!/compare/1566000000/1567036800

https://backpack.tf/profiles/76561198342161127#!/compare/1566691200/1566777600

QS

Sale 2:

https://backpack.tf/profiles/76561198122407309#!/compare/1565222400/1565568000

https://backpack.tf/profiles/76561198254918432#!/compare/1565308800/1565568000

Sold for ~7.5 keys

Sale 3:

https://backpack.tf/profiles/76561197992417394#!/compare/1566000000/1568592000

https://backpack.tf/profiles/76561198323565601#!/compare/1569369600/1569456000

https://backpack.tf/profiles/76561198089253101#!/compare/1569369600/1569456000

Untrace

Sale 4:

https://backpack.tf/profiles/76561198089253101#!/compare/1569974400/1570060800

https://backpack.tf/profiles/76561198243719108#!/compare/1569974400/1570060800

https://backpack.tf/profiles/76561198962212543#!/compare/1569456000/1570060800

https://backpack.tf/profiles/76561198063075911#!/compare/1570060800/1570147200

https://backpack.tf/profiles/76561198950621219#!/compare/1570060800/1570147200

https://backpack.tf/profiles/76561198962212543#!/compare/1570060800/1570147200

https://backpack.tf/profiles/76561198063075911#!/compare/1570060800/1570147200

https://backpack.tf/profiles/76561198118157202#!/compare/1570060800/1570147200

https://backpack.tf/profiles/76561197998450640#!/compare/1569974400/1570233600

https://backpack.tf/profiles/76561198805760331#!/compare/1568678400/1570320000

Gambling

Sale 5:

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

https://backpack.tf/profiles/76561198134546405#!/compare/1569888000/1570406400

https://backpack.tf/profiles/76561198841279602#!/compare/1570492800/1570406400

Untrace / QS

sale 6:

https://backpack.tf/profiles/76561198841279602#!/compare/1570492800/1570579200

https://backpack.tf/profiles/76561198089253101#!/compare/1570492800/1570579200

Untrace / Keys

Sale 7:

https://backpack.tf/profiles/76561197962529690#!/compare/1567382400/1567468800

https://backpack.tf/profiles/76561198072423627#!/compare/1567382400/1567900800

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

Untrace

Sale 8:

https://backpack.tf/profiles/76561198337734785#!/compare/1570492800/1570579200

https://backpack.tf/profiles/76561198109506971#!/compare/1570492800/1570579200

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

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

https://backpack.tf/profiles/76561198956442137#!/compare/1570492800/1570579200

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

https://backpack.tf/profiles/76561198132228989#!/compare/1570233600/1570579200

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

https://backpack.tf/profiles/76561198841279602#!/compare/1570492800/1570579200

Gambling ending QS

Sale 9:

https://backpack.tf/profiles/76561198049929374#!/compare/1567036800/1567900800

https://backpack.tf/profiles/76561198079417919#!/compare/1566259200/1567900800

Sold for ~7.5 keys

Sale 10:

https://backpack.tf/profiles/76561198079417919#!/compare/1568505600/1569110400

https://backpack.tf/profiles/76561198213234076#!/compare/1568419200/1568505600

untrace

Sale 11:

https://backpack.tf/profiles/76561198213234076#!/compare/1568419200/1568505600

https://backpack.tf/profiles/76561198208292100#!/compare/1568419200/1568505600

Can trace a key and sweets

Sale 12:

https://backpack.tf/profiles/76561198208292100#!/compare/1568764800/1568851200

https://backpack.tf/profiles/76561198258223464#!/compare/1568678400/1568764800

untrace

sale 13:

https://backpack.tf/profiles/76561198258223464#!/compare/1568764800/1568851200

https://backpack.tf/profiles/76561198183084561#!/compare/1568764800/1568851200

Bulky

Sale 14:

https://backpack.tf/profiles/76561198183084561#!/compare/1568764800/1568851200

https://backpack.tf/profiles/76561198326550188#!/compare/1568764800/1568851200

Sold for 9 keys

Sale 15:

https://backpack.tf/profiles/76561198326550188#!/compare/1568764800/1568851200

https://backpack.tf/profiles/76561198059109284#!/compare/1568764800/1568851200

untrace

Sale 16:

https://backpack.tf/profiles/76561198059109284#!/compare/1568937600/1569024000

https://backpack.tf/profiles/76561198337734785#!/compare/1568851200/1568937600

Sold for ~7 keys

Sale 17:

https://marketplace.tf/items/tf2/181;5;u59

$23 / $1.83 = 12.57 keys

Total sales @:

7, 7.5, 7.5, 9, 12.57 keys

buyers up to ~6.5 keys,

multiple sellers for 9 keys,

calling 7 low, 12.57 high,

taking 7.5 - 9 keys