Resuggestion, thanks to seVen & polar for the info!

Sale 1:

https://backpack.tf/profiles/76561198048948446#!/compare/1550534400/1550620800

https://backpack.tf/profiles/76561198220198628#!/compare/1550534400/1550620800

Sold for Steam Handcraft + Roaring Fubar + 6 keys

End up below buyers.

Sale 2:

https://backpack.tf/profiles/76561198220198628#!/compare/1550534400/1550620800

https://backpack.tf/profiles/76561198002757046#!/compare/1550534400/1550620800

QS

Sale 3:

https://backpack.tf/profiles/76561198002757046#!/compare/1550620800/1550707200

https://backpack.tf/profiles/76561198060363810#!/compare/1550534400/1550707200

Sold for 36 keys (Sold in 1 day)

Sale 4:

https://backpack.tf/profiles/76561198011321852#!/compare/1546041600/1546128000

https://backpack.tf/profiles/76561198051888098#!/compare/1546128000/1546300800

Sold for 40 keys

Sale 5:

https://backpack.tf/profiles/76561198051888098#!/compare/1546387200/1546473600

https://backpack.tf/profiles/76561198119634686#!/compare/1546387200/1546473600

QS

Sale 6:

https://backpack.tf/profiles/76561198119634686#!/compare/1546560000/1546646400

https://backpack.tf/profiles/76561198321443975#!/compare/1546560000/1546646400

Untrace

Sale 7:

https://backpack.tf/profiles/76561198321443975#!/compare/1547251200/1547337600

https://backpack.tf/profiles/76561198036930727#!/compare/1547337600/1547424000

Sold for Burning Stuntman + 7 keys (Took 7 days)

Stunt Man Mini:

https://backpack.tf/suggestion/5c6da4b144325a1dbe10b7c2

Suggestion for 44 keys

Total is 51 keys

https://bot.tf/stats/listings/Y3GEJK04

B/O of 50 keys

Sale 8:

https://backpack.tf/profiles/76561198036930727#!/compare/1547424000/1548028800

https://backpack.tf/profiles/76561198062900578#!/compare/1544659200/1547510400

Sold with 6 keys for Burning Sky High(46.5) (took 1 day)

Total is 40.5 keys

Sale 9:

https://backpack.tf/profiles/76561198062900578#!/compare/1547510400/1547942400

https://backpack.tf/profiles/76561198036175412#!/compare/1547942400/1548374400

Sold for KaW BoA (Sold in 1 day)

BoA Mini:

https://backpack.tf/suggestion/5c737cc3678072223f00a017

Suggestion for 48.5 keys

https://bot.tf/stats/listings/4O72P0V4

B/O of 48 keys

Sale 10:

https://backpack.tf/profiles/76561198036175412#!/compare/1548547200/1548633600

https://backpack.tf/profiles/76561198046393528#!/compare/1548460800/1548547200

Untrace

Sale 11:

https://backpack.tf/profiles/76561198046393528#!/compare/1548460800/1548547200

https://backpack.tf/profiles/76561198380297476#!/compare/1548460800/1548547200

Sold for 23 keys + KaW Baker (sol within same day)

Baker Mini:

https://backpack.tf/suggestion/5c7380f6d3817221ff3262a4

Suggestion for 16 keys

Total is 39 keys

Sale 12:

https://backpack.tf/profiles/76561198099451468#!/compare/1549152000/1549238400

https://backpack.tf/profiles/76561198168863803#!/compare/1549152000/1549238400

No.

Sale 13:

https://backpack.tf/profiles/76561198168863803#!/compare/1549584000/1549756800

https://backpack.tf/profiles/76561198301336678#!/compare/1549584000/1549670400

Untrace

Sale 14:

https://backpack.tf/profiles/76561198301336678#!/compare/1549670400/1549756800

https://backpack.tf/profiles/76561198331693432#!/compare/1549584000/1549670400

Untrace

Sale 15:

https://backpack.tf/profiles/76561198331693432#!/compare/1549756800/1549929600

https://backpack.tf/profiles/76561198055622215#!/compare/1549756800/1549929600

Bulky

Sale 16

https://backpack.tf/profiles/76561198055622215#!/compare/1549929600/1550188800

https://backpack.tf/profiles/76561198285371555#!/compare/1550102400/1550188800

Bulk

Sale 17:

https://backpack.tf/profiles/76561198285371555#!/compare/1550188800/1550275200

https://backpack.tf/profiles/76561198105071091#!/compare/1550188800/1550275200

Bulky

Sale 18:

https://backpack.tf/profiles/76561198105071091#!/compare/1550620800/1550707200

https://backpack.tf/profiles/76561198062197943#!/compare/1550620800/1550707200

Keys

Sale 19:

https://backpack.tf/profiles/76561198062197943#!/compare/1550793600/1550880000

https://backpack.tf/profiles/76561198067741299#!/compare/1550793600/1550880000

Bulk for keys

Sale 20:

https://backpack.tf/profiles/76561198067741299#!/compare/1550793600/1550880000

https://backpack.tf/profiles/76561198404593276#!/compare/1550793600/1550880000

Sold for Planets Crone Dome (same Day)

Crone Mini:

https://backpack.tf/suggestion/5c738300678072241125f1aa

Suggestion for 51 keys

Sale 21:

https://backpack.tf/profiles/76561198404593276#!/compare/1550793600/1550880000

https://backpack.tf/profiles/76561198164819613#!/compare/1550793600/1550880000

Sold for Amaranthine Waxy + 6 keys (same day)

Use there

Sale 22:

https://backpack.tf/profiles/76561198164819613#!/compare/1550880000/1550966400

https://backpack.tf/profiles/76561198148836514#!/compare/1550880000/1550966400

Bulk

Sale 23:

https://backpack.tf/profiles/76561198164966855#!/compare/1545609600/1546041600

https://backpack.tf/profiles/76561198160856661#!/compare/1545955200/1546041600

Sold with Smoking Gatsby + ~12 keys in sweets for OF Kong Cone

Gatsby Mini:

https://backpack.tf/suggestion/5c73854d67807226f2795489

Sugestion for 10 keys

Cone Mini:

https://backpack.tf/suggestion/5c738920d381722a2c4c37d2

Suggestion for 64 keys

Total is 42 keys

Sale 24:

https://backpack.tf/profiles/76561198160856661#!/compare/1546300800/1546387200

https://backpack.tf/profiles/76561198353034820#!/compare/1546387200/1546473600

Sold for 42 keys (thx Torb) (Sold in 2-3 days)

Sale 25:

https://backpack.tf/profiles/76561198353034820#!/compare/1547078400/1547164800

https://backpack.tf/profiles/76561198132601722#!/compare/1547078400/1547164800

Sold for CPS Peak + 1 key

Use there

Sale 26:

https://backpack.tf/profiles/76561198132601722#!/compare/1547078400/1547164800

https://backpack.tf/profiles/76561198046132370#!/compare/1547078400/1547164800

Sold for Brain Motif(35) + G Fetti Towering + 3 keys

Pillar Mini:

https://backpack.tf/suggestion/5c738e26d381723527748d89

Suggestion for 18 keys

Total is 56 keys

Sale 27:

https://backpack.tf/profiles/76561198046132370#!/compare/1547078400/1547164800

https://backpack.tf/profiles/76561198052246700#!/compare/1547078400/1547164800

Sold for CH Snowcapped + 8 keys

Snowcapped Mini:

https://backpack.tf/suggestion/5c58899ccf6c75137d5d78ae

Suggestion for 28.5 keys

Total is 36.5 keys

Sale 28:

https://backpack.tf/profiles/76561198052246700#!/compare/1547251200/1547337600

https://backpack.tf/profiles/76561198865283993#!/compare/1547078400/1547337600

Gamble?

Sale 29:

https://backpack.tf/profiles/76561198106255568#!/compare/1545782400/1545868800

https://backpack.tf/profiles/76561198451172915#!/compare/1545782400/1545868800

Untrace

Sale 30:

https://backpack.tf/profiles/76561198123219305#!/compare/1549065600/1549929600

https://backpack.tf/profiles/76561198168863803#!/compare/1549843200/1549929600

Bp sale

Sale 31:

https://backpack.tf/profiles/76561198168863803#!/compare/1550275200/1550361600

https://backpack.tf/profiles/76561198443489337#!/compare/1550275200/1550361600

Sold for 38 keys

Sale 32:

https://backpack.tf/profiles/76561198443489337#!/compare/1550534400/1550620800

QS to bot

Sale 33 - 39:

https://marketplace.tf/items/30767;5;u13

$50.00 / $1.73 = 28.90 keys

$56.64 / $1.7 = 33.32 keys

$69.00 / $1.67 = 41.32 keys

$65.60 / $1.64 = 40.00 keys

$65.00 / $1.65 = 39.39 keys

$65.00 / $1.76 = 36.93 keys

$79.99 / $1.75 = 45.71 keys

Total sales @: (Rounding)

29, 33, 36, 37, 37, 38, 39, 39, 40, 40, 41, 41, 42, 42 ,46, 48, 50, 51, 56 keys

SeVen's Part:

I feel like this is too high.

You've excluded low sales, that could've been included and included high sales, that could've been excluded.

I'm not entirely sure about the high sales, because there are quite a lot of them, however the gap between 42 and 46 is big.

I'd say, if you do wanna include the high sales, include the low sales as well, so 36-51.

or you exclude both the low and high sales and go with 38-42.

polar's Part:

Agree here. General rule of them is to, if possible, remove about an equal number of low and high end sales as outliers. Doing so, you get options of 36-49 or 37-46 or 38-42. Any of those ranges would in my opinion be better and acceptable.

Taking 38-42, to tighten the range around the pure sales.