https://steamcommunity.com/market/listings/440/Strange%20Filter%3A%20Freaky%20Fair%20%28Community%29

Aug 23, 0.592 keys = 31.22 ref

Aug 23, 0.603 keys = 31.88 ref

Aug 24, 0.603 keys = 31.88 ref (x2)

Aug 25, 0.598 keys = 31.55 ref

Aug 28, 0.596 keys = 31.44 ref

Sep 3, 0.607 keys = 32 ref (x2)

Sep 5, 0.500 keys = 26.44 ref (x10)

Sep 7, 0.476 keys = 25.11 ref

Sep 8, 0.506 keys = 26.77 ref

Sep 8, 0.513 keys = 27 ref

Sep 12, 0.429 keys = 22.66 ref

Sep 13, 0.490 keys = 25.88 ref

Sep 13, 0.514 keys = 27.11 ref

Sep 14, 0.569 keys = 30 ref

Sep 14, 0.579 keys = 30.55 ref

Sep 14, 0.580 keys = 30.55 ref (x2)

Sep 14, 0.587 keys = 31 ref

Sep 15, 0.591 keys = 31.22 ref (x2)

Sep 18, 0.585 keys = 30.88 ref

https://marketplace.tf/items/tf2/6651;6;uncraftable

Aug 22, $2.69/1.84 = 1.46 keys

Aug 28, $2.69/1.81 = 1.48 keys

Aug 31, $2.69/1.8 = 1.49 keys (x2)

Sep 4, $2.69/1.8 = 1.49 keys

Marketplace sales seem high relative to SCM. Also excluding 22.66 for distance from remaining sales and being below buyers.