Sale 1:

https://backpack.tf/profiles/76561198387381476#!/compare/NaN/1532995200

https://backpack.tf/profiles/76561198320760023#!/compare/1533254400/1533427200

Untrace

Sale 2:

https://backpack.tf/profiles/76561198295160385#!/compare/1533427200/1533513600

https://backpack.tf/profiles/76561198841707825#!/compare/1533254400/1533513600

Untrace.

Sale 3:

https://backpack.tf/profiles/76561198841707825#!/compare/1533513600/1533600000

https://backpack.tf/profiles/76561198109452231#!/compare/1533427200/1533513600

Can only trace a key

Sale 4:

https://backpack.tf/profiles/76561198109452231#!/compare/1533600000/1533686400

https://backpack.tf/profiles/76561198000091310#!/compare/1533600000/1533686400

Sold for Steaming Virus Doctor + negligible sweets

Use there.

Sale 5:

https://backpack.tf/profiles/76561198000091310#!/compare/1533686400/1533772800

https://backpack.tf/profiles/76561198182957762#!/compare/1533686400/1533772800

Sold for 14 keys

Sale 6:

https://backpack.tf/profiles/76561198182957762#!/compare/1534204800/1534291200

https://backpack.tf/profiles/76561198349207524#!/compare/1534204800/1534291200

Sold for Searing Sack + negligible sweets

Use there.

Sale 7:

https://backpack.tf/profiles/76561198349207524#!/compare/1534204800/1534291200

https://backpack.tf/profiles/76561198155066949#!/compare/1534204800/1534291200

Sold with negligible sweets for Planets Tundra(15.5)

Total is 15 keys

Sale 8:

https://backpack.tf/profiles/76561198155066949#!/compare/1534291200/1534377600

https://backpack.tf/profiles/76561198075552138#!/compare/1534204800/1534809600

Sold for 16 keys

Sale 9:

https://backpack.tf/profiles/76561198075552138#!/compare/1535068800/1535155200

https://backpack.tf/profiles/76561198024867201#!/compare/1535068800/1535155200

Sold for keys, QS?

Sale 10:

https://backpack.tf/profiles/76561198024867201#!/compare/1535673600/1535760000

https://backpack.tf/profiles/76561198167340530#!/compare/1535673600/1535760000

Sold for 17 keys

Sale 11:

https://backpack.tf/profiles/76561198311498888#!/compare/1534118400/1534204800

https://backpack.tf/profiles/76561198351134693#!/compare/1534118400/1534204800

Sold for 14 keys + 16 ref

Sale 12:

https://backpack.tf/profiles/76561198351134693#!/compare/1534550400/1534636800

https://backpack.tf/profiles/76561198336633071#!/compare/1534550400/1537833600

Sold for DP Headsplitter

Use there.

Sale 13:

https://backpack.tf/profiles/76561198336633071#!/compare/1534809600/1534896000

https://backpack.tf/profiles/76561197982879578#!/compare/1534809600/1534896000

Sold for Planets Bot Dogger + ~2 keys in sweets

Use there.

Sale 14:

https://backpack.tf/profiles/76561197982879578#!/compare/1534896000/1534982400

https://backpack.tf/profiles/76561198070744678#!/compare/1534723200/1534896000

Sold for 13 keys + 10 ref

Sale 15:

https://backpack.tf/profiles/76561198070744678#!/compare/1534723200/1534896000

https://backpack.tf/profiles/76561198049638059#!/compare/1534809600/1534896000

Sold for 13 keys + 10 ref

Sale 16:

https://backpack.tf/profiles/76561198049638059#!/compare/1534896000/1534982400

https://backpack.tf/profiles/76561198044468624#!/compare/1534896000/1534982400

Sold for 16 keys

Sale 17:

https://backpack.tf/profiles/76561198044468624#!/compare/1534982400/1535068800

https://backpack.tf/profiles/76561198096697494#!/compare/1534896000/1534982400

Untrace.

Sale 18:

https://backpack.tf/profiles/76561198096697494#!/compare/1534896000/1534982400

https://backpack.tf/profiles/76561198049114958#!/compare/1534982400/1535068800

Sold for KaW Mlikman + negligible sweets

Milkman Mini:

https://backpack.tf/suggestion/5baf248844325a7f2d537ea2

Suggestion for 18 keys

Sale 19:

https://backpack.tf/profiles/76561198049114958#!/compare/1534982400/1535068800

https://backpack.tf/profiles/76561198119163692#!/compare/1534982400/1535068800

Untrace.

Sale 20:

https://backpack.tf/profiles/76561198119163692#!/compare/1535587200/1535673600

https://backpack.tf/profiles/76561198385552241#!/compare/1533600000/1535587200

Untrace.

Sale 21:

https://backpack.tf/profiles/76561198385552241#!/compare/1535587200/1535673600

https://backpack.tf/profiles/76561198027196798#!/compare/1535587200/1535673600

Sold for Smoking Elf(9) + Smoking Carouser's + 1 key

Carouser Mini:

https://backpack.tf/suggestion/5baf292dcf6c7541bc24bddc

Suggestion for 8 keys

Total is 18 keys

Sale 22:

https://marketplace.tf/items/341;5;u35

Sold for 30 USD,

Keys at 1.96,

Total is 15.31 keys

Total sales @:

13, 13, 14, 14, 15, 15.31, 16, 16, 17, 18, 18 keys

https://i.imgur.com/k6CgNxh.jpg

Buyers up to 13 keys

Seller at 16, unsold for nearly a month.

https://backpack.tf/item/1405060114

Taking 14 - 16 keys