Sale 1:

https://backpack.tf/profiles/76561197986864096#!/compare/1571270400/1571702400

https://backpack.tf/profiles/76561198144472459#!/compare/1571616000/1571702400

Sold with ~3 keys in sweets for Aces Warpig

Warpig Mini:

https://backpack.tf/suggestion/5dd5c0d7d38172697b0eea36

Suggestion for 17.5 keys

Total is 14.5 keys

Sale 2:

https://backpack.tf/profiles/76561198144472459#!/compare/1571788800/1571875200

https://backpack.tf/profiles/76561198097292857#!/compare/1571443200/1571875200

Taunt or airdog, can't tell.

Sale 3:

https://backpack.tf/profiles/76561198053401704#!/compare/1569369600/1571097600

https://backpack.tf/profiles/76561197996869097#!/compare/1572048000/1572134400

Untrace

sale 4:

https://backpack.tf/profiles/76561198278481498#!/compare/1572480000/1572566400

https://backpack.tf/profiles/76561198389129235#!/compare/1572480000/1572566400

Sold for Grail Burst + Rockets Box Trot(5.5) + Smoking Breaker

Breaker Mini:

https://backpack.tf/suggestion/5d9170cad38172517003ba82

going off mod comment for average of 7.5 keys

Burst mini:

https://backpack.tf/suggestion/5dd5d2d667807251ca6ac20a

Suggestion for ~6.25 keys

Total is ~19 keys

sale 5:

https://backpack.tf/profiles/76561198389129235#!/compare/1572652800/1572998400

https://backpack.tf/profiles/76561198123912038#!/compare/1572912000/1572998400

bulky

Sale 6:

https://backpack.tf/profiles/76561198123912038#!/compare/1572912000/1572998400

https://backpack.tf/profiles/76561198971964068#!/compare/1572912000/1572998400

Bulky

sale 7:

https://backpack.tf/profiles/76561198971964068#!/compare/1572998400/1573084800

https://backpack.tf/profiles/76561198306076386#!/compare/1572998400/1573084800

Sold for OF Modest(20.5)

sale 8:

https://backpack.tf/profiles/76561198306076386#!/compare/1572998400/1573084800

https://backpack.tf/profiles/76561198379996789#!/compare/1572912000/1573084800

Sold with 2 keys for KaW Falkirk

Falkirk Mini:

https://backpack.tf/suggestion/5dd5d6b167807257ab1b3907

Suggestion for 17.5 keys

total is 15.5 keys

Total sales @:

14.5, 15.5, 19, 20.5 keys

seller for 16 keys,

buyers up to 10 keys,

considering 21 resold for lower,

taking 15 - 19 keys.