Sale 1:

https://backpack.tf/profiles/76561198256802122#!/compare/1550880000/1550966400

https://backpack.tf/profiles/76561198044995916#!/compare/1550880000/1550966400

Sold for 10 keys

Sale 2:

https://backpack.tf/profiles/76561198044995916#!/compare/1550966400/1551052800

https://backpack.tf/profiles/76561198203564124#!/compare/1550880000/1550966400

Sold with negligible sweets for 12 keys

Sale 3:

https://backpack.tf/profiles/76561198203564124#!/compare/1551484800/1551657600

https://backpack.tf/profiles/76561198002757046#!/compare/1551657600/1551744000

QS? maybe bulk then QS?

Sale 4:

https://backpack.tf/profiles/76561198002757046#!/compare/1551657600/1551744000

https://backpack.tf/profiles/76561198074924284#!/compare/1551657600/1551744000

Sold for 11 keys

Sale 5:

https://backpack.tf/profiles/76561198074924284#!/compare/1551744000/1551830400

https://backpack.tf/profiles/76561198040380060#!/compare/1551830400/1552262400

Sold for DP Yellow(17.5) + ~2 keys in sweets

Total is 19 keys

Sale 6:

https://backpack.tf/profiles/76561198083031622#!/compare/1548892800/1549238400

https://backpack.tf/profiles/76561198323565601#!/compare/1551571200/1551657600

Untrace

Sale 7:

https://backpack.tf/profiles/76561198323565601#!/compare/1551571200/1551657600

https://backpack.tf/profiles/76561198174009537#!/compare/1551657600/1551744000

Sold for ~10 keys

Sale 8:

https://backpack.tf/profiles/76561198174009537#!/compare/1551657600/1551744000

https://backpack.tf/profiles/76561198133053380#!/compare/1551744000/1551830400

Sold for 9 keys?

Sale 9:

https://backpack.tf/profiles/76561198133053380#!/compare/1551830400/1552003200

https://backpack.tf/profiles/76561198055622215#!/compare/1551830400/1551744000

Bulk

Sale 10:

https://backpack.tf/profiles/76561198055622215#!/compare/1552435200/1552521600

https://backpack.tf/profiles/76561198080594357#!/compare/1552435200/1552521600

Bulk

Sale 11:

https://backpack.tf/profiles/76561198080594357#!/compare/1552694400/1552780800

https://backpack.tf/profiles/76561198201339157#!/compare/1551744000/1552780800

Sold for 11 keys

Sale 12:

https://backpack.tf/profiles/76561198201339157#!/compare/1552867200/1553212800

https://backpack.tf/profiles/76561198339104273#!/compare/1553126400/1553212800

Sold with ~5 keys in sweets for Smoking Company(16)

Total is 11 keys

Total sales @:

9, 10, 10, 11, 11, 11, 12, 19 keys

buyers up to 9 keys,

Sellers at 13,

Taking 10 - 12 keys.