Sale 1:

https://backpack.tf/profiles/76561198167826648#!/compare/1588464000/1594512000

https://backpack.tf/profiles/76561198358296372#!/compare/1588377600/1588464000

Untrace / QS

Sale 2:

https://backpack.tf/profiles/76561198358296372#!/compare/1588550400/1588636800

https://backpack.tf/profiles/76561197964546925#!/compare/1588550400/1588636800

= 13 Keys, QS

Sale 3:

https://backpack.tf/profiles/76561198069762729#!/compare/1588118400/1588204800

https://backpack.tf/profiles/76561198296207797#!/compare/1588118400/1589587200

Untrace

Sale 4:

https://backpack.tf/profiles/76561198296207797#!/compare/1589587200/1594684800

https://backpack.tf/profiles/76561198122210566#!/compare/1559174400/1592956800

Untrace

Marketplace.tf: https://marketplace.tf/items/tf2/31058;5;u132

Sale 5:

$30 / $1.82 = 16.48 keys = 16 Keys.

No B/O

Sale 6:

$32 / $1.96 = 16.33 keys = 16 Keys.

N B/O

Sale 7:

$25 / $1.97 = 12.69 keys = 13 Keys. (QS, mp.tf buyers above)

No B/O

Sale 8:

$29 / $2.00 = 14.50 keys = 15 Keys.

No B/O

Sale 9:

$39.99 / $2.00 = 20.00 keys - 20 Keys.

No B/O

Sale 10:

$33.33 / $1.99 = 16.75 keys = 17 Keys.

For the 6th time, No B/O!

Sales: 13, 13, 15, 16, 16, 17, 20

Going with 15-20 Keys!