Sale 1:

https://backpack.tf/profiles/76561198394877897#!/compare/1584489600/1584576000

https://backpack.tf/profiles/76561198868740200#!/compare/1584576000/1584748800

Sold for 16 keys (keys came from unusual sales)

Sale 2:

https://backpack.tf/profiles/76561198868740200#!/compare/1584921600/1585180800

https://backpack.tf/profiles/76561198082625126#!/compare/1584835200/1584921600

Bulk

Sale 3:

https://backpack.tf/profiles/76561198082625126#!/compare/1585612800/1585699200

https://backpack.tf/profiles/76561198057113717#!/compare/1585440000/1585699200

Bulk keys

Sale 4:

https://backpack.tf/profiles/76561198057113717#!/compare/1585958400/1586044800

https://backpack.tf/profiles/76561199005803152#!/compare/1585872000/1585958400

Sold for 13 keys

Sale 5:

https://backpack.tf/profiles/76561199005803152#!/compare/1585872000/1585958400

https://backpack.tf/profiles/76561198262869483#!/compare/1585872000/1585958400

Sold for Neutron Titanium Pillar

use there

Sale 6:

https://backpack.tf/profiles/76561198262869483#!/compare/1585958400/1586304000

https://backpack.tf/profiles/76561198154061149#!/compare/1586217600/1586304000

Sold with 2 keys for C9 Fedora

Fedora Mini:

https://backpack.tf/suggestion/5e9df1344c4a927ae34b6488

Suggestion for 17.5 keys

Total is 15.5 keys

https://bot.tf/stats/listings/4EPZ3VK6

B/O of 19.5 keys

Sale 7:

https://backpack.tf/profiles/76561198154061149#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198095027292#!/compare/1586304000/1586563200

Sold for PBoR Squeeze + 2 keys

use there

Sale 8:

https://backpack.tf/profiles/76561198301588496#!/compare/1581292800/1581638400

https://backpack.tf/profiles/76561198118959715#!/compare/1582070400/1582156800

Untrace

Sale 9:

https://backpack.tf/profiles/76561198118959715#!/compare/1583625600/1583712000

https://backpack.tf/profiles/76561198043936328#!/compare/1583625600/1583712000

Untrace

Sale 10:

https://backpack.tf/profiles/76561198337734785#!/compare/1579737600/1579824000

https://backpack.tf/profiles/76561198399420032#!/compare/1579737600/1579824000

Sold for 14 keys

Sale 11:

https://backpack.tf/profiles/76561198080179568#!/compare/1583366400/1583452800

https://backpack.tf/profiles/76561198159141797#!/compare/1583452800/1583539200

Sold for 16 keys

Sale 12:

https://marketplace.tf/items/tf2/30658;5;u61

$25 / $1.75 = 14.29 keys <--- https://backpack.tf/item/7886733839

$16.06 / $1.71 = 9.39 keys

$33.99 / $1.79 = 18.99 keys

Total sales @:

9.5, 13, 14, 14, 15.5, 16, 16, 19 keys

buyers up to 12 keys,

2 week unsold for 19 keys,

seller for 17.8 lowered slghtly, unsold for ~18 keys for ~2 weeks:

https://bot.tf/stats/listings/4ZP3ZPX1

calling 13 low,

19 high,

taking 14 - 16 keys.