Sale 1:

Sold for Stormy Storm Mining Light (Suggestion at 25.5) + Rancho (~0.5)

No outpost

Seller: https://backpack.tf/profiles/76561198176860775#!/compare/1511222400/1511308800

Buyer: https://backpack.tf/profiles/76561198067445885#!/compare/1511222400/1511308800

The seller sold the mining light to a bot afterwards.

X = 26

Sale 2:

Sold for 23 keys

Seller: https://backpack.tf/profiles/76561198048008254#!/compare/1509667200/1509753600

Buyer: https://backpack.tf/profiles/76561198079170528#!/compare/1509667200/1509840000

X = 23

Sales 3 & 4:

Sold for $41 and $41.02 on Marketplace.tf, both to buy-orders.

https://marketplace.tf/items/1115;5;u3008

https://backpack.tf/item/2702365622

https://backpack.tf/item/4671160029

41/1.99 = ~20.6

41.02/1.98 = ~20.7

X = 21

X = 21

Sale 5:

Sold to a quickbuyer for 20 keys

Seller: https://backpack.tf/profiles/76561198024925599#!/compare/1509494400/1509580800

Buyer: https://backpack.tf/profiles/76561198048008254#!/compare/1509494400/1509580800

X = 20

Sale 6:

Sold for Grail Carlton

No outpost

Seller: https://backpack.tf/profiles/76561198008113369#!/compare/1511222400/1511308800

Buyer: https://backpack.tf/profiles/76561198123530436#!/compare/1511222400/1511308800

Best not to use taunt sales, as they are still unstable, and we have other sales to work with here.

Sale 7:

Bulk

Seller: https://backpack.tf/profiles/76561198301663376#!/compare/1509408000/1509580800

Buyer: https://backpack.tf/profiles/76561198057330477#!/compare/1509408000/1509580800

Sale 8:

Bulk

Seller: https://backpack.tf/profiles/76561198106189896#!/compare/1509148800/1509235200

Buyer: https://backpack.tf/profiles/76561198024925599#!/compare/1509148800/1509235200

Sale 9:

Sold for Fountain of Delight Oblooterated

Seller: https://backpack.tf/profiles/76561198082041730#!/compare/1509926400/1510012800

Buyer: https://backpack.tf/profiles/76561198073353867#!/compare/1510012800/1510099200

Best to not use this sale.

Stormy Mining Light:

https://backpack.tf/suggestion/5a198ad744325a4dfe43d5e4

Sellers:

30 keys:

https://i.imgur.com/ZTzNiL0.png - 4 days

https://i.imgur.com/jIvsrS7.png - 4 days

35 keys:

https://i.imgur.com/EMeaZZT.jpg - 2 days

36 keys:

https://i.imgur.com/UnQgFzU.png - 3 months

70 keys:

https://i.imgur.com/keEA6Bc.png - 7 months

Sales at:

20

21 (2x)

23

26

Quicksales outweigh the regular sales. Should not exclude all of them. Will exclude 20, however.

Going with 21-26.