Sale 1:

https://backpack.tf/profiles/76561198021055079#!/compare/1540425600/1540512000

https://backpack.tf/profiles/76561198120579663#!/compare/1539820800/1540512000

Sold for 25 keys

Sale 2:

https://backpack.tf/profiles/76561198120579663#!/compare/1544745600/1544918400

https://backpack.tf/profiles/76561198021272428#!/compare/1544659200/1544918400

Bulk

Sale 3:

https://backpack.tf/profiles/76561198132937542#!/compare/1540252800/1540771200

https://backpack.tf/profiles/76561198143969056#!/compare/1540166400/1540252800

Sold for HG Bootleg

Use there.

Sale 4:

https://backpack.tf/profiles/76561198143969056#!/compare/1540512000/1540598400

https://backpack.tf/profiles/76561198007934603#!/compare/1540425600/1540512000

Sold for 18 keys + ~1 key in sweets.

Total is 19 keys

Sale 5:

https://backpack.tf/profiles/76561198007934603#!/compare/1540598400/1540684800

https://backpack.tf/profiles/76561198088707185#!/compare/1540512000/1540598400

Sold for 19 keys

Sale 6:

https://backpack.tf/profiles/76561198088707185#!/compare/1540771200/1540857600

https://backpack.tf/profiles/76561198333764079#!/compare/1539734400/1540944000

Untrace

Sale 7:

https://backpack.tf/profiles/76561198333764079#!/compare/1541980800/1546473600

https://backpack.tf/profiles/76561198165484704#!/compare/1541894400/1541980800

Bulky?

Sale 8:

https://backpack.tf/profiles/76561198165484704#!/compare/1542844800/1542931200

https://backpack.tf/profiles/76561198004221478#!/compare/1542844800/1542931200

Untrace

Sale 9:

https://backpack.tf/profiles/76561198004221478#!/compare/1543017600/1543104000

https://backpack.tf/profiles/76561198342161127#!/compare/1543017600/1543104000

Sold for 18 keys

Sale 10:

https://backpack.tf/profiles/76561198232041512#!/compare/1546214400/1546300800

https://backpack.tf/profiles/76561198110883015#!/compare/1539907200/1546300800

Sold for 25 keys

Sale 11:

https://backpack.tf/profiles/76561198110883015#!/compare/1546300800/1546387200

https://backpack.tf/profiles/76561198349886701#!/compare/1546300800/1546387200

Untrace

Sale 12:

https://backpack.tf/profiles/76561198110883015#!/compare/1546300800/1546387200

https://backpack.tf/profiles/76561198349886701#!/compare/1546300800/1546387200

Keys, QS?

Sale 13, 14:

https://marketplace.tf/items/30798;5;u107

Sold for 49, 29.99 USD

Keys at 1.73, 1.77 USD,

Totals are 28.32, 16.94 keys

Total sales @:

16.94, 18, 19, 19, 25, 25, 28.32 keys

Seller at 24 keys, unsold for 2 weeks,

Buyers up to 18 keys,

considering 19 sold relatively quick, and its close to buyers, wouldn't be fair to take that flat.

Gonna go with 19 - 25 keys (talked with Foamy already)