Choo Choo. Car 22

Sale 1:

https://backpack.tf/profiles/76561198036879409#!/compare/1532131200/1532476800

https://backpack.tf/profiles/76561198038697801#!/compare/1528848000/1534636800

Untrace.

Sale 2:

https://backpack.tf/profiles/76561198166427437#!/compare/1531699200/1531785600

https://backpack.tf/profiles/76561198197739413#!/compare/1531699200/1531785600

bulk based off of buyers.

Sale 3:

https://backpack.tf/profiles/76561198151052104#!/compare/1535673600/1535846400

Bulk.

Sale 4:

https://backpack.tf/profiles/76561198141552639#!/compare/1536537600/1536710400

https://backpack.tf/profiles/76561198403404710#!/compare/1536624000/1536710400

Sold for FoD Strongarm(8)

Sale 5:

https://backpack.tf/profiles/76561198059077391#!/compare/1532649600/1535328000

Not unusual when sales occurred.

Sale 6:

https://backpack.tf/profiles/76561198076597902#!/compare/1534896000/1534982400

https://backpack.tf/profiles/76561198014709984#!/compare/1534723200/1535328000

Sold for 6 keys(1 used to buy Marxman)

Sale 7:

https://backpack.tf/profiles/76561198099763083#!/compare/1531958400/1532044800

https://backpack.tf/profiles/76561198176022675#!/compare/1531872000/1531958400

Untrace.

Sale 8:

https://backpack.tf/profiles/76561198176022675#!/compare/1532217600/1532304000

QS to bot

Sale 9:

https://backpack.tf/profiles/76561198312583107#!/compare/1532822400/1532908800

https://backpack.tf/profiles/76561198139749455#!/compare/1532822400/1532908800

Sold for 10 keys (ID Match)

Sale 10:

https://backpack.tf/profiles/76561198139749455#!/compare/1533427200/1533513600

https://backpack.tf/profiles/76561198097271466#!/compare/1533427200/1533513600

QS?

Sale 11:

https://backpack.tf/profiles/76561198097271466#!/compare/1533686400/1533772800

https://backpack.tf/profiles/76561198038070401#!/compare/1533686400/1533772800

Sold for Unusual SMG, high.

Sale 12:

https://backpack.tf/profiles/76561198038070401#!/compare/1534550400/1534723200

https://backpack.tf/profiles/76561198055622215#!/compare/1534550400/1534636800

Bulk.

Sale 13:

https://backpack.tf/profiles/76561198055622215#!/compare/1536105600/1536192000

https://backpack.tf/profiles/76561198155219465#!/compare/1536105600/1536192000

Bulk.

Sale 14:

https://backpack.tf/profiles/76561198155219465#!/compare/1536105600/1536192000

https://backpack.tf/profiles/76561198454504440#!/compare/1536019200/1536192000

Bulk.

Sale 15:

https://backpack.tf/profiles/76561198454504440#!/compare/1536192000/1536278400

https://backpack.tf/profiles/76561198080179568#!/compare/1536192000/1536278400

https://backpack.tf/profiles/76561198050206204#!/compare/1536105600/1536364800

Cannot trace.

Sale 16:

https://backpack.tf/profiles/76561198160942053#!/compare/1532217600/1532304000

https://backpack.tf/profiles/76561198026129220#!/compare/1532390400/1532476800

Untrace.

Sale 17:

https://backpack.tf/profiles/76561198049599641#!/compare/1534982400/1535068800

https://backpack.tf/profiles/76561198140565712#!/compare/1534982400/1535068800

Bulk sale.

Sale 18:

https://backpack.tf/profiles/76561198140565712#!/compare/1535241600/1535414400

https://backpack.tf/profiles/76561198081384929#!/compare/1535328000/1535414400

Untrace.

Sale 19:

https://backpack.tf/profiles/76561198081384929#!/compare/1535500800/1535587200

https://backpack.tf/profiles/76561198160856661#!/compare/1535500800/1535587200

Bulk.

Sale 20:

https://backpack.tf/profiles/76561198160856661#!/compare/1536192000/1536278400

https://backpack.tf/profiles/76561198073376401#!/compare/1536192000/1536278400

Sold for 8 keys

Sale 21:

https://backpack.tf/profiles/76561198040131408#!/compare/1535241600/1535673600

SCM

Sale 22:

https://backpack.tf/profiles/76561198251805358#!/compare/1532476800/1532649600

https://backpack.tf/profiles/76561198251805358#!/compare/1532822400/1533081600

https://backpack.tf/profiles/76561198202094888#!/compare/1532736000/1533168000

Sold for Showstopper RPS(13.5)

Sale 23:

https://backpack.tf/profiles/76561198040772512#!/compare/1533600000/1534291200

SCM

Sale 24, 25, 26, 27:

https://marketplace.tf/items/30844;5;u3003

Sold for 26.99, 10.15, 25.99, 6.01 USD

Keys at 1.95, 1.94, 1.87, ignoring last sale.

Totals are 13.84, 5.23, 13.90 keys

Total sales @:

5.23, 6, 8, 8, 10, 13.5, 13.84, 13.9 keys

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

Buyers up to 5 keys

Seller at 10 keys

https://backpack.tf/item/6341697773

Let's go with 8 - 10 keys.