Sale 1:

https://backpack.tf/profiles/76561198137326742#!/compare/1580774400/1580860800

https://backpack.tf/profiles/76561198120672630#!/compare/1580774400/1580860800

Bulk

Sale 2:

https://backpack.tf/profiles/76561198120672630#!/compare/1581638400/1581724800

https://backpack.tf/profiles/76561198279609240#!/compare/1581638400/1581724800

Sold for 10 keys

Sale 3:

https://backpack.tf/profiles/76561198000609315#!/compare/1582070400/1582156800

https://backpack.tf/profiles/76561198111637432#!/compare/1578009600/1582156800

https://backpack.tf/profiles/76561198878866368#!/compare/1582156800/1582502400

Bulk

Sale 4:

https://backpack.tf/profiles/76561198878866368#!/compare/1583366400/1583539200

https://backpack.tf/profiles/76561199017904814#!/compare/1583452800/1583539200

Bulk

Sale 5:

https://backpack.tf/profiles/76561198024867201#!/compare/1580428800/1580601600

https://backpack.tf/profiles/76561198177719569#!/compare/1580342400/1580515200

Untrace

Sale 6:

https://backpack.tf/profiles/76561198177719569#!/compare/1580515200/1580601600

https://backpack.tf/profiles/76561198255568360#!/compare/1580428800/1580515200

https://backpack.tf/profiles/76561198036010622#!/compare/1574985600/1580601600

https://backpack.tf/profiles/76561198134546405#!/compare/1580515200/1580601600

Bulk

Sale 7:

https://backpack.tf/profiles/76561198071772361#!/compare/1581465600/1581552000'

https://backpack.tf/profiles/76561198100484031#!/compare/1581033600/1581638400

Untrace

Sale 8:

https://backpack.tf/profiles/76561198020673987#!/compare/1583107200/1583280000

https://backpack.tf/profiles/76561198850274253#!/compare/1583107200/1583193600

Bulk

Sale 9:

https://backpack.tf/profiles/76561198850274253#!/compare/1586908800/1586995200

https://backpack.tf/profiles/76561198869390792#!/compare/1586217600/1586995200

https://backpack.tf/profiles/76561198159563723#!/compare/1576368000/1587081600

https://backpack.tf/profiles/76561198092449612#!/compare/1586908800/1587081600

https://backpack.tf/profiles/76561197984373540#!/compare/1586995200/1587081600

https://backpack.tf/profiles/76561198020673987#!/compare/1587081600/1587254400

Bulk / untrace

Sale 10:

https://backpack.tf/profiles/76561198100322725#!/compare/1584144000/1584316800

https://backpack.tf/profiles/76561198985910282#!/compare/1584057600/1584144000

Untrace

Sale 11:

https://backpack.tf/profiles/76561198311458278#!/compare/1586131200/1586217600

https://backpack.tf/profiles/76561198416581482#!/compare/1560211200/1586131200

Untrace / bulk

Sale 12:

https://backpack.tf/profiles/76561198442349647#!/compare/1580169600/1580342400

https://backpack.tf/profiles/76561198095862827#!/compare/1580256000/1580342400

Sold for 9 keys (manually counted)

Sale 13:

https://backpack.tf/profiles/76561198095862827#!/compare/1580342400/1580428800

https://backpack.tf/profiles/76561198414515070#!/compare/1579478400/1580342400

https://backpack.tf/profiles/76561198061353482#!/compare/1580342400/1580428800

https://backpack.tf/profiles/76561197984373540#!/compare/1580342400/1580428800

https://backpack.tf/profiles/76561198061353482#!/compare/1580342400/1580428800

https://backpack.tf/profiles/76561197963038974#!/compare/1580342400/1580428800

Bulk / untrace / transfer

Sale 14:

https://backpack.tf/profiles/76561197963038974#!/compare/1580428800/1580515200

https://backpack.tf/profiles/76561198284872868#!/compare/1580256000/1580601600

Untrace

Sale 15:

https://backpack.tf/profiles/76561198284872868#!/compare/1580601600/1582156800

https://backpack.tf/profiles/76561198134546405#!/compare/1580515200/1580601600

Untrace

Sale 16:

https://backpack.tf/profiles/76561198134546405#!/compare/1580601600/1580688000

https://backpack.tf/profiles/76561197968633696#!/compare/1580688000/1580774400

Untrace

Sale 17:

https://backpack.tf/profiles/76561198365440148#!/compare/1585353600/1585785600

https://backpack.tf/profiles/76561198442349647#!/compare/1586476800/1586563200

QS

Sale 18:

https://backpack.tf/profiles/76561198442349647#!/compare/1586736000/1586822400

https://backpack.tf/profiles/76561198267950243#!/compare/1586304000/1586822400

https://backpack.tf/profiles/76561198171672427#!/compare/1586736000/1586822400

https://backpack.tf/profiles/76561198115719083#!/compare/1586390400/1586908800

https://backpack.tf/profiles/76561198011732976#!/compare/1581811200/1587081600

https://backpack.tf/profiles/76561198020673987#!/compare/1587081600/1587254400

Untrace / bulk

Sale 19:

https://backpack.tf/profiles/76561198834678807#!/compare/1581292800/1583280000

https://backpack.tf/profiles/76561198058799344#!/compare/1582848000/1582934400

https://backpack.tf/profiles/76561198950621219#!/compare/1582848000/1582934400

Untrace / bulk

Sale 20:

https://backpack.tf/profiles/76561198136249114#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561198965747659#!/compare/1583020800/1583107200

https://backpack.tf/profiles/76561198047863952#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198020673987#!/compare/1582761600/1583107200

Untrace / bulk

Sale 21:

https://backpack.tf/profiles/76561198020673987#!/compare/1583884800/1584144000

https://backpack.tf/profiles/76561198002757046#!/compare/1584057600/1584144000

QS

Sale 22:

https://backpack.tf/profiles/76561198002757046#!/compare/1584489600/1584576000

https://backpack.tf/profiles/76561198354459626#!/compare/1584489600/1584576000

Sold for 8 keys

Sale 23:

https://backpack.tf/profiles/76561198354459626#!/compare/1584576000/1584662400

https://backpack.tf/profiles/76561198402039752#!/compare/1585440000/1585526400

https://backpack.tf/profiles/76561198138340148#!/compare/1585699200/1585785600

Untrace

Sale 24:

https://backpack.tf/profiles/76561198138340148#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198880361166#!/compare/1585785600/1586044800

Bulk

Sale 25:

https://backpack.tf/profiles/76561198880361166#!/compare/1586044800/1586131200

https://backpack.tf/profiles/76561198322560312#!/compare/1585958400/1586044800

https://backpack.tf/profiles/76561198108020681#!/compare/1586044800/1586131200

https://backpack.tf/profiles/76561198966838493#!/compare/1585872000/1586131200

https://backpack.tf/profiles/76561198206072125#!/compare/1585440000/1586131200

Untrace / bulk

Sale 26:

https://backpack.tf/profiles/76561198045778710#!/compare/1459728000/1583452800

https://backpack.tf/profiles/76561198047704310#!/compare/1583366400/1584662400

Bulk / untrace

Sale 27:

https://backpack.tf/profiles/76561198280275064#!/compare/1579824000/1579910400

https://backpack.tf/profiles/76561198454615761#!/compare/1579824000/1579910400

QS

Sale 28:

https://backpack.tf/profiles/76561198215566652#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198886850124#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198386134939#!/compare/1581724800/1581897600

https://backpack.tf/profiles/76561198131480353#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198820335875#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198886850124#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198020673987#!/compare/1581897600/1581984000

Gambling?

Sale 29:

https://backpack.tf/profiles/76561198020673987#!/compare/1583107200/1583280000

https://backpack.tf/profiles/76561198850274253#!/compare/1583107200/1583193600

Bulk

Sale 30:

https://backpack.tf/profiles/76561198850274253#!/compare/1586304000/1586390400

https://backpack.tf/profiles/76561198799983169#!/compare/1586304000/1586390400

Untrace

Sale 31:

https://backpack.tf/profiles/76561198799983169#!/compare/1586390400/1586476800

https://backpack.tf/profiles/76561198055747230#!/compare/1584489600/1586476800

Bulk

Sale 32:

https://backpack.tf/profiles/76561198055747230#!/compare/1586649600/1586908800

https://backpack.tf/profiles/76561198070266530#!/compare/1587168000/1587254400

Bulk

Sale 33:

https://backpack.tf/profiles/76561198842201154#!/compare/1582329600/1584576000

https://backpack.tf/profiles/76561198303162762#!/compare/1582416000/1583798400

Untrace

Sale 34:

https://backpack.tf/profiles/76561198303162762#!/compare/1583798400/1584489600

https://backpack.tf/profiles/76561198138818087#!/compare/1582329600/1586217600

Untrace

Sale 35:

https://backpack.tf/profiles/76561198322560312#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198272244771#!/compare/1586217600/1586304000

Untrace

Sale 36 - 56:

https://marketplace.tf/items/tf2/521;5;u58

$12.9 / $1.78 = 7.25 keys

$15.99 / $1.77 = 9.03 keys <--- https://backpack.tf/item/7510367753

$15.49 / $1.77 = 8.75 keys

$15.99 / $1.78 = 8.98 keys

$15.00 / $1.77 = 8.47 keys

$14.99 / $1.77 = 8.47 keys <--- https://backpack.tf/item/7956323868 | https://bot.tf/stats/listings/4RG277J2 B/O of 12 keys

$14.35 / $1.77 = 8.11 keys

$17.9 / $1.75 = 10.23 keys <--- https://backpack.tf/item/2358176522

$12.27 / $1.75 = 7.01 keys

$10.25 / $1.75 = 5.86 keys

$14.99 / $1.76 = 8.52 keys

$17.9 / $1.77 = 10.11 keys

$17.49 / $1.72 = 10.17 keys

$17.49 / $1.72 = 10.17 keys

$17.49 / $1.72 = 10.17 keys

$17 / $1.69 = 10.06 keys

$15 / $1.69 = 8.88 keys <--- https://backpack.tf/item/7956349211

$17.00 / $1.69 = 10.06 keys

$16.83 / $1.69 = 9.96 keys

$15.00 / $1.69 = 8.88 keys

$20.00 / $1.79 = 11.17 keys

Total sales @:

6

7

7.5

8 (x2)

8.5 (x3)

9 (x6)

10 (x9)

11

Buyers up to 7 keys,

calling 7.5 low,

11 high,

taking 8 - 10 keys.