Sale 1:

https://backpack.tf/profiles/76561198317606171#!/compare/1540425600/1540512000

https://backpack.tf/profiles/76561198140095187#!/compare/1538006400/1540944000

Untrace

Sale 2:

https://backpack.tf/profiles/76561198382654640#!/compare/1540080000/1540166400

https://backpack.tf/profiles/76561198137518170#!/compare/1539561600/1540166400

Untrace

Sale 3:

https://backpack.tf/profiles/76561198137518170#!/compare/1542499200/1542672000

Untrace (Prob QS to bot)

Sale 4:

https://backpack.tf/profiles/76561198080179568#!/compare/1544486400/1544572800

https://backpack.tf/profiles/76561198145683123#!/compare/1544486400/1544572800

Sold for 20 keys + ~1 key in sweets

Total is 21 keys

Sale 5:

https://backpack.tf/profiles/76561198145683123#!/compare/1545436800/1545523200

https://backpack.tf/profiles/76561198126887938#!/compare/1545177600/1545523200

Bulk

Sale 6:

https://backpack.tf/profiles/76561198126887938#!/compare/1546041600/1546128000

https://backpack.tf/profiles/76561198256802122#!/compare/1545782400/1546128000

Sold for 20 keys

Sale 7:

https://backpack.tf/profiles/76561198111940172#!/compare/1539907200/1543017600

https://backpack.tf/profiles/76561198104743323#!/compare/1499472000/1541635200

Untrace

Sale 8:

https://backpack.tf/profiles/76561198080179568#!/compare/1539907200/1539993600

https://backpack.tf/profiles/76561198251805358#!/compare/1539907200/1540166400

Sold for 21 keys

Sale 9:

https://backpack.tf/profiles/76561198002757046#!/compare/1543276800/1543363200

https://backpack.tf/profiles/76561198076804761#!/compare/1543276800/1543363200

Sold for ~18 keys

Sale 10:

https://backpack.tf/profiles/76561198134528651#!/compare/1544054400/1544313600

QS

Sale 11:

https://backpack.tf/profiles/76561198002757046#!/compare/1544140800/1544227200

https://backpack.tf/profiles/76561198263251225#!/compare/1543881600/1544227200

Untrace

Sale 12:

https://backpack.tf/profiles/76561198263251225#!/compare/1545264000/1545350400

https://backpack.tf/profiles/76561198146813246#!/compare/1545177600/1545264000

Sold for 16 keys?

Sale 13:

https://backpack.tf/profiles/76561198146813246#!/compare/1546214400/1546300800

https://backpack.tf/profiles/76561198364475021#!/compare/1546041600/1546300800

Sold for 19 keys

Sale 14:

https://backpack.tf/profiles/76561198364475021#!/compare/1546041600/1546300800

https://backpack.tf/profiles/76561198143969056#!/compare/1546041600/1546300800

Bulk

Sale 15:

https://backpack.tf/profiles/76561198143969056#!/compare/1546041600/1546300800

https://backpack.tf/profiles/76561198251214662#!/compare/1546214400/1546300800

Sold for 19 keys + negligible sweets

Sale 16:

https://backpack.tf/profiles/76561198251214662#!/compare/1546214400/1546300800

https://backpack.tf/profiles/76561198127938353#!/compare/1546300800/1546387200

Sold for Searing Classy

Use there

Sale 17:

https://backpack.tf/profiles/76561198127938353#!/compare/1546473600/1546560000

https://backpack.tf/profiles/76561198038751161#!/compare/1546473600/1546560000

Sold for 23 keys

Total sales @:

16, 18, 19, 19, 20, 21, 21, 23 keys

Buyers up to 18 keys,

Really new seller for 21 keys,

Gonna leave 19 out as it sold for pure twice quickly.

Taking 20 - 23 keys.