Sale 1:

https://backpack.tf/profiles/76561198325529303#!/compare/1549670400/1549756800

https://backpack.tf/profiles/76561198073522694#!/compare/1549584000/1550102400

Untrace

Sale 2:

https://backpack.tf/profiles/76561198073522694#!/compare/1550188800/1550620800

https://backpack.tf/profiles/76561198838870134#!/compare/1549584000/1550361600

Untrace.

Sale 3:

https://backpack.tf/profiles/76561198345124809#!/compare/1552780800/1552953600

https://backpack.tf/profiles/76561198337734785#!/compare/1552780800/1552867200

QS

Sale 4:

https://backpack.tf/profiles/76561198337734785#!/compare/1552780800/1552867200

https://backpack.tf/profiles/76561198061489334#!/compare/1552780800/1552867200

Sold for 51 keys?

Sale 5:

https://backpack.tf/profiles/76561198061489334#!/compare/1553126400/1553212800

https://backpack.tf/profiles/76561198142899455#!/compare/1553126400/1553212800

Sold for 85 keys

Sale 6:

https://backpack.tf/profiles/76561198142899455#!/compare/1553212800/1553299200

https://backpack.tf/profiles/76561198050062763#!/compare/1553212800/1553299200

Bulk

Sale 7:

https://backpack.tf/profiles/76561198002757046#!/compare/1547337600/1547424000

https://backpack.tf/profiles/76561198160297740#!/compare/1547337600/1547424000

Sold for 60 keys

Sale 8:

https://backpack.tf/profiles/76561198160297740#!/compare/1547424000/1547510400

https://backpack.tf/profiles/76561198211566865#!/compare/1547424000/1547510400

Sold for KaW Law(47) + 45 keys + ~1 key in sweets

Total is 93 keys

Sale 9:

https://backpack.tf/profiles/76561198211566865#!/compare/1548028800/1548115200

https://backpack.tf/profiles/76561198114764948#!/compare/1548028800/1548115200

Sold for DBD Trans(53.5) + 21 keys + ~3 keys in sweets

Total is 77.5 keys

https://bot.tf/stats/listings/M0XLGLV4

B/O of 77 keys

Sale 10:

https://backpack.tf/profiles/76561198114764948#!/compare/1548979200/1549324800

https://backpack.tf/profiles/76561198066119670#!/compare/1549238400/1549324800

Bulk

Sale 11:

https://backpack.tf/profiles/76561198066119670#!/compare/1549324800/1549411200

https://backpack.tf/profiles/76561198327109707#!/compare/1549324800/1549411200

Sold for keys?

Sale 12:

https://backpack.tf/profiles/76561198327109707#!/compare/1549756800/1549843200

https://backpack.tf/profiles/76561198057286167#!/compare/1549843200/1550361600

Sold for 66 keys

Sale 13:

https://marketplace.tf/items/1095;5;u89

$138.90 / $1.75 = 79.37 keys

Total sales @:

51, 60, 66, 77, 79.37, 85, 93 keys

Seller at 70 keys, (listed for a few days https://bot.tf/stats/listings/Y90197DY )

Buyers up to 57 keys,

Gonna say the seller is young,

Calling 60 low,

93 high,

Taking 66 - 85 keys