Sale 1:

https://backpack.tf/profiles/76561198081960217#!/compare/1583539200/1583625600

https://backpack.tf/profiles/76561198267930919#!/compare/1583539200/1583625600

Sold for ~14 keys

sale 2:

https://backpack.tf/profiles/76561198267930919#!/compare/1584489600/1584576000

https://backpack.tf/profiles/76561198104034880#!/compare/1584662400/1584921600

Untrace

sale 3:

https://backpack.tf/profiles/76561198021055079#!/compare/1586822400/1586908800

https://backpack.tf/profiles/76561198869276865#!/compare/1586908800/1586995200

Sold for 14 keys

sale 4:

https://backpack.tf/profiles/76561198869276865#!/compare/1587168000/1587254400

https://backpack.tf/profiles/76561198093692174#!/compare/1586908800/1587254400

Untrace

sale 5:

https://backpack.tf/profiles/76561198093692174#!/compare/1587254400/1587340800

https://backpack.tf/profiles/76561198305494036#!/compare/1587168000/1587254400

Untrace

sale 6:

https://backpack.tf/profiles/76561198305494036#!/compare/1587168000/1587254400

https://backpack.tf/profiles/76561198141187659#!/compare/1587168000/1587254400

Untrace

sale 7:

https://backpack.tf/profiles/76561198068530433#!/compare/1582156800/1582329600

https://backpack.tf/profiles/76561198131081286#!/compare/1582243200/1582329600

Sold with ~1 key in sweets for G Fetti Hallmark

use there

https://bot.tf/stats/listings/MNL319G8

B/O of 15 keys

sale 8:

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

https://backpack.tf/profiles/76561198216793315#!/compare/1582329600/1582416000

Can trace ~7.5 keys

Sale 9:

https://backpack.tf/profiles/76561198216793315#!/compare/1582416000/1582502400

https://backpack.tf/profiles/76561198084219943#!/compare/1582416000/1582502400

Sold for Smoking Noir

use there

sale 10:

https://backpack.tf/profiles/76561198084219943#!/compare/1582416000/1582502400

https://backpack.tf/profiles/76561198826254247#!/compare/1582416000/1582502400

Sold with ~0.5 keys in sweets for C9 Hood

use there

Sale 11:

https://backpack.tf/profiles/76561198826254247#!/compare/1582588800/1582675200

https://backpack.tf/profiles/76561198048770504#!/compare/1582329600/1582761600

Can trace 7 keys

sale 12:

https://backpack.tf/profiles/76561198048770504#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561198796395930#!/compare/1582934400/1583020800

Bulk

sale 13:

https://backpack.tf/profiles/76561198796395930#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561199015174726#!/compare/1582934400/1583020800

Sold with 2 keys for PE Warming

Warming Mini:

https://backpack.tf/suggestion/5ea63e4eae57a874034da1bb

Suggestion for 18 keys

Total is 16 keys

sale 14:

https://backpack.tf/profiles/76561199015174726#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561198276915768#!/compare/1583020800/1583107200

Untrace

sale 15:

https://backpack.tf/profiles/76561198276915768#!/compare/1583193600/1583280000

https://backpack.tf/profiles/76561198101751380#!/compare/1582848000/1583280000

Sold for 16 keys

sale 16:

https://backpack.tf/profiles/76561198101751380#!/compare/1587513600/1587600000

https://backpack.tf/profiles/76561198050651176#!/compare/1587427200/1587513600

Untrace

sale 17:

https://backpack.tf/profiles/76561198050651176#!/compare/1587513600/1587600000

https://backpack.tf/profiles/76561198172078559#!/compare/1587427200/1587686400

untrace

sale 18:

https://backpack.tf/profiles/76561198172078559#!/compare/1587427200/1587686400

https://backpack.tf/profiles/76561198100836666#!/compare/1587600000/1587686400

Sold for ~11 keys

sale 19:

https://marketplace.tf/items/tf2/616;5;u29

$27.27 / $1.73 = 15.76 keys

$27.99 / $1.68 = 16.66 keys

Total sales @:

11, 14, 14, 16, 16, 16, 17 keys

buyers up to 11 keys,

seller at 15 keys,

https://bot.tf/stats/listings/YD1O1O0K

calling 11 low,

17 high,

taking 14 - 16 keys, conserves around seller.