Sale 1:

https://backpack.tf/profiles/76561198093243385#!/compare/1470355200/1582243200

https://backpack.tf/profiles/76561198826254247#!/compare/1582156800/1582243200

Untrace

sale 2:

https://backpack.tf/profiles/76561198826254247#!/compare/1582329600/1582416000

https://backpack.tf/profiles/76561198929043238#!/compare/1582329600/1582416000

sold for 13 keys

sale 3:

https://backpack.tf/profiles/76561198929043238#!/compare/1582329600/1582416000

https://backpack.tf/profiles/76561198131081286#!/compare/1582329600/1582416000

sold for KaW Warhood + 4 keys

Warhood Mini:

https://backpack.tf/suggestion/5ea33c2463b1e731b3140644

Suggestion for 10 keys

Total is 14 keys

sale 4:

https://backpack.tf/profiles/76561198131081286#!/compare/1582502400/1582588800

https://backpack.tf/profiles/76561198283665350#!/compare/1582502400/1582588800

sold for Smoking Napper + ~2 keys in sweets

Napper Mini:

https://backpack.tf/suggestion/5eaa7b3423b1cd31ce225301

Suggestion for 10.5 keys

Total is 12.5 keys

https://bot.tf/stats/listings/MQ9PPWG3

B/O of 19 keys

Sale 5:

https://backpack.tf/profiles/76561198171672427#!/compare/1586649600/1586736000

https://backpack.tf/profiles/76561198154211785#!/compare/1586649600/1586736000

Bulk

sale 6:

https://backpack.tf/profiles/76561198154211785#!/compare/1587168000/1587340800

https://backpack.tf/profiles/76561198011732976#!/compare/1587081600/1587254400

Untrace

sale 7:

https://backpack.tf/profiles/76561198192432594#!/compare/1587340800/1587427200

https://backpack.tf/profiles/76561198023411644#!/compare/1587340800/1587427200

https://backpack.tf/profiles/76561198337734785#!/compare/1587340800/1587427200

Untrace

sale 8:

https://backpack.tf/profiles/76561198247169086#!/compare/1579737600/1579996800

https://backpack.tf/profiles/76561198303886984#!/compare/1579651200/1579996800

sold for Stormy Hallmark

Hallmark Mini:

https://backpack.tf/suggestion/5ea2ba1091ec053308648b1d

Suggestion for 12 keys

sale 9:

https://backpack.tf/profiles/76561197999873164#!/compare/1582416000/1582502400

https://backpack.tf/profiles/76561198077030510#!/compare/1582243200/1582934400

Sold for ~17 keys

Sale 10, 11:

https://marketplace.tf/items/tf2/644;5;u35

$34.99 / $1.79 = 19.55 keys

$34.99 / $1.76 = 19.88 keys <--- https://backpack.tf/item/697156522

Sale 12:

https://backpack.tf/profiles/76561198337734785#!/compare/1587600000/1587686400

https://backpack.tf/profiles/76561198089533329#!/compare/1587513600/1587686400

Sold for keys

sale 13:

https://backpack.tf/profiles/76561198089533329#!/compare/1587859200/1587945600

https://backpack.tf/profiles/76561198822643112#!/compare/1587859200/1587945600

sold for 17 keys

Total sales @:

12, 13, 13, 14, 17, 17, 20, 20 keys

buyers up to 13 keys,

one high buyer for ~14 keys,

taking 14 - 20 keys....