Sale 1: Untrace.

https://backpack.tf/profiles/76561198117358999#!/compare/1551484800/1551571200

https://backpack.tf/profiles/76561198102665590#!/compare/1548720000/1554163200

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 2: Untrace.

https://backpack.tf/profiles/76561198102100102#!/compare/1551657600/1555718400

https://backpack.tf/profiles/76561198830486882#!/compare/1551571200/1551657600

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 3: ~4.5 Keys.

https://backpack.tf/profiles/76561198830486882#!/compare/1552435200/1552521600

https://backpack.tf/profiles/76561198141312259#!/compare/1552348800/1552521600

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 4: Untrace.

https://backpack.tf/profiles/76561198141312259#!/compare/1552694400/1552780800

https://backpack.tf/profiles/76561198197215790#!/compare/1552694400/1552780800

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 5: Untrace.

https://backpack.tf/profiles/76561198197215790#!/compare/1553040000/1553126400

https://backpack.tf/profiles/76561198126632582#!/compare/1553212800/1553385600

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 6: Bulk.

https://backpack.tf/profiles/76561198238695416#!/compare/1552953600/1553212800

https://backpack.tf/profiles/76561198125791160#!/compare/1553126400/1553212800

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 7: ~6 Keys Pure.

https://backpack.tf/profiles/76561198125791160#!/compare/1553990400/1554076800

https://backpack.tf/profiles/76561198269224273#!/compare/1554076800/1554163200

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 8: Untrace.

https://backpack.tf/profiles/76561198269224273#!/compare/1554595200/1554940800

https://backpack.tf/profiles/76561198030343929#!/compare/1554595200/1554681600

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 9: Untrace.

https://backpack.tf/profiles/76561198030343929#!/compare/1555286400/1555372800

https://backpack.tf/profiles/76561198928452311#!/compare/1555113600/1555372800

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 10: Untrace.

https://backpack.tf/profiles/76561198873165470#!/compare/1557446400/1557532800

https://backpack.tf/profiles/76561198454615761#!/compare/1557360000/1557446400

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Marketplace.tf Sales:

https://marketplace.tf/items/30762;5;u3003

Sale 11: Low.

Apr 6, 19

$6.06 / $1.79 = 3.39 keys

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 12: Low.

Apr 9, 19

$6.05 / $1.77 = 3.42 keys

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 13: ~6 Keys.

Apr 27, 19

$10.41 / $1.8 = 5.78 keys

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 14: ~5 Keys.

May 8, 19

$9.00 / $1.8 = 5.00 keys

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 15: ~5 Keys. (Same day)

May 8, 19

$8.91 / $1.8 = 4.95 keys

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Sale 16: Low.

May 11, 19

$6.09 / $1.8 = 3.38 keys

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Three sales below buyers, but there are like eight buyers that counter

Usable Sales: 4.5/5/5/6/6

Going With 4.5-6