Sale 1:

https://backpack.tf/profiles/76561198084660530#!/compare/1582675200/1582761600

https://backpack.tf/profiles/76561198131081286#!/compare/1582675200/1582761600

bulk

sale 2:

https://backpack.tf/profiles/76561198131081286#!/compare/1582848000/1582934400

https://backpack.tf/profiles/76561198056160585#!/compare/1583452800/1584576000

Untrace

sale 3:

https://backpack.tf/profiles/76561198332005426#!/compare/1581724800/1586649600

https://backpack.tf/profiles/76561198157688219#!/compare/1587081600/1587168000

Untrace

sale 4:

https://backpack.tf/profiles/76561198157688219#!/compare/1587081600/1587168000

https://backpack.tf/profiles/76561198209786857#!/compare/1587081600/1587168000

Sold for 15 keys

sale 5:

https://backpack.tf/profiles/76561198398963044#!/compare/1586390400/1587513600

https://backpack.tf/profiles/76561198080179568#!/compare/1586304000/1586390400

QS

sale 6:

https://backpack.tf/profiles/76561198215714424#!/compare/1582070400/1582588800

https://backpack.tf/profiles/76561198271077419#!/compare/1581984000/1582070400

SCM

Sale 7:

https://backpack.tf/profiles/76561198847448624#!/compare/1584316800/1585958400

https://backpack.tf/profiles/76561198357428287#!/compare/1585872000/1585958400

Sold for 8 keys

sale 8:

https://backpack.tf/profiles/76561198357428287#!/compare/1585872000/1585958400

https://backpack.tf/profiles/76561198310972287#!/compare/1585872000/1585958400

Sold with 1 key for Stormy Rag

Rag Mini:

https://backpack.tf/suggestion/5eaa7a22ec55a746b33569e9

Suggestion for 9 keys

Total is 8 keys

https://bot.tf/stats/listings/4ZP3RV7D

B/O of 10 keys

sale 9:

https://backpack.tf/profiles/76561198310972287#!/compare/1585958400/1586131200

https://backpack.tf/profiles/76561198965016033#!/compare/1586131200/1586217600

Sold for ~9.5 keys in sweets

https://bot.tf/stats/listings/M0O7G76V

B/O of 11 keys

sale 10:

https://backpack.tf/profiles/76561198965016033#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198275222296#!/compare/1586131200/1586304000

Bulky

Sale 11:

https://marketplace.tf/items/tf2/439;5;u61

$24.99 / $1.67 = 14.96 keys <--- https://backpack.tf/item/7956566782

$24.99 / $1.72 = 14.53 keys

Total sales :@

8, 8, 9.5, 15, 15, 15 keys

https://i.imgur.com/WJVOc49.jpg

multiple unsolds for 12 keys, aging or unsold for nearly a month,

taking a range of 10 - 15 keys, conserves close to sellers.