Suggestions

Sale 1:
https://backpack.tf/profiles/76561198371962520#!/compare/1582329600/1587513600
https://backpack.tf/profiles/76561198210474748#!/compare/1588636800/1588723200
Untrace

sale 2:
https://backpack.tf/profiles/76561198258042183#!/compare/1585785600/1585872000
https://backpack.tf/profiles/76561198337734785#!/compare/1585699200/1585785600
QS

sale 3:
https://backpack.tf/profiles/76561198337734785#!/compare/1589068800/1589155200
https://backpack.tf/profiles/76561198108797381#!/compare/1589068800/1589155200
Sold for keys

sale 4:
https://backpack.tf/profiles/76561198218057237#!/compare/1580083200/1586044800
https://backpack.tf/profiles/76561197994697258#!/compare/1588118400/1588204800
Untrace

Sale 5:
https://backpack.tf/profiles/76561197994194912#!/compare/1587254400/1587340800
https://backpack.tf/profiles/76561198160856661#!/compare/1587254400/1587340800
untrace / Bulk

sale 6:
https://backpack.tf/profiles/76561198420462526#!/compare/1589760000/1589846400
https://backpack.tf/profiles/76561198111664529#!/compare/1589155200/1589846400
Sold for Aces Dogger
use there

Sale 7:
https://marketplace.tf/items/tf2/120;5;u32
$22.62 / $1.69 = 13.38 keys
$19.99 / $1.69 = 11.83 keys
$10.5 / $1.79 = 5.87 keys
$16.59 / $1.87 = 8.87 keys

Sale 11:
https://backpack.tf/profiles/76561198263599385#!/compare/1589673600/1589760000
https://backpack.tf/profiles/76561198117170800#!/compare/1589673600/1589846400
Untrace

sale 12:
https://backpack.tf/profiles/76561198117170800#!/compare/1589846400/1590105600
https://backpack.tf/profiles/76561198277431281#!/compare/1589587200/1589846400
Sold for keys, can trace ~2 keys.

sale 13:
https://backpack.tf/profiles/76561198277431281#!/compare/1589587200/1589846400
https://backpack.tf/profiles/76561198075100115#!/compare/1589846400/1589932800
Sold for KaW Pampered(8.5) + 1 key

Total is 9.5 keys


Total sales @:
6, 9, 9.5, 12, 13 keys

Buyers up to ~7.23 keys,
seller for 12 keys, unsold for ~2 weeks,
SCM seller for ~9.21 keys,
multiple seller for ~11 keys  on MPTF,