3 years since the last update... Let's see if that can be fixed

Marketplace Sales:

https://marketplace.tf/items/tf2/30525;13;strange

Sale 1:

Sold on Aug 30th for $6.66, Keys were $1.82

3.7 Keys

Sale 2:

Sold on Aug 24th for $11.88, Keys were $1.82

6.5 Keys

Sale 3:

Sold on Aug 2nd for $11.75, Keys were $1.81

6.5 Keys

SCM Sales:

https://steamcommunity.com/market/listings/440/Strange%20Haunted%20Creature%27s%20Grin

Sale 4:

Sold on Aug 30th (9pm) for $22.38, Keys were $2.37

9.4 Keys

Sale 5:

Sold on Aug 25th (3pm) for $14.20, Keys were $2.34

6 Keys

Sale 6:

Sold on Aug 14th (10am) for $15, Keys were $2.31

6.5 Keys

Sale 7:

Sold on Jul 30th for $12.61, Keys were $2.45

5 Keys

Sales 8-9:

Sold on Jul 29th for $12.23, Keys were $2.45

5 Keys x2

Sale 10:

Sold on Jul 25th for $8.07, Keys were $2.52

3.2 Keys

Sale 11:

Sold on Jul 24th for $12.20, Keys were $2.40

5.1 Keys

Summary of Sales:

1x 9.4

3x 6.5

1x 6

1x 5.1

3x 5

1x 3.7

1x 3.2

Considering 3.7, 3.2 and 9.4 as outliers.

Going with 5 - 6.5 Keys