Sale 1:

https://backpack.tf/profiles/76561198133864129#!/compare/1585353600/1585440000

https://backpack.tf/profiles/76561198088631543#!/compare/1585267200/1585440000

Aussie or keys, can't tell.

sale 2:

https://backpack.tf/profiles/76561198088631543#!/compare/1585440000/1585612800

https://backpack.tf/profiles/76561198052645355#!/compare/1585440000/1585526400

untrace

sale 3:

https://backpack.tf/profiles/76561198052645355#!/compare/1585526400/1585699200

https://backpack.tf/profiles/76561198000485231#!/compare/1585612800/1585699200

Untrace

sale 4:

https://backpack.tf/profiles/76561198000485231#!/compare/1585612800/1585699200

https://backpack.tf/profiles/76561198025868445#!/compare/1585526400/1585699200

Untrace

Sale 5:

https://backpack.tf/profiles/76561198025868445#!/compare/1585699200/1585872000

https://backpack.tf/profiles/76561198216561389#!/compare/1585612800/1585699200

sold with 5 keys for Miami Aviator

Aviator Mini:

https://backpack.tf/suggestion/5ec3031ed5214302bb1f9eb7

Suggestion for 16.5 keys

Total is 11.5 keys

sale 6:

https://backpack.tf/profiles/76561198216561389#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198337734785#!/compare/1586217600/1586304000

QS for 12 keys

sale 7:

https://backpack.tf/profiles/76561198337734785#!/compare/1587168000/1587254400

https://backpack.tf/profiles/76561198240602342#!/compare/1551312000/1587254400

Untrace

sale 8:

https://backpack.tf/profiles/76561198240602342#!/compare/1551312000/1587254400

https://backpack.tf/profiles/76561198847267051#!/compare/1587168000/1587254400

Sold with 1 key for HG Snowcapped

use there

Sale 9:

https://backpack.tf/profiles/76561198847267051#!/compare/1587254400/1587340800

https://backpack.tf/profiles/76561198070387020#!/compare/1586908800/1587340800

Sold with Negligible sweets for 13 keys

sale 10:

https://marketplace.tf/items/tf2/30357;5;u34

$33.33 / $1.75 = 19.05 keys

$20.5 / $1.80 = 11.39 keys

$27.99 / $1.82 = 15.38 keys <--- https://backpack.tf/item/6883469300

Total sales @:

11, 12, 12, 13, 15, 19 keys

2 buyers up to 12 keys,

others at 11 keys,.

calling 19 high,

11 low,

taking 12 - 15 keys.