Resuggestion, thanks to Foamy for the info!

Sale 1:

https://backpack.tf/profiles/76561198061489334#!/compare/1541548800/1541635200

https://backpack.tf/profiles/76561198321456383#!/compare/1541116800/1541635200

Sold for Burning Toque + MG Metal Slug + Searing Belt(32) + Mystery Smokey + KaW Cowl + KaW Slo-Poke + ~6 keys in sweets

Toque Mini:

https://backpack.tf/suggestion/5c42c9d2cf6c7504f03b784c

Suggestion for 48.5 keys

Poke Mini:

https://backpack.tf/suggestion/5c454013cf6c75333d318ff7

Suggestion for 28.5 keys

Cowl Mini:

https://backpack.tf/suggestion/5c454481cf6c75376801be92

Suggestion for 19 keys

Smokey Mini:

https://backpack.tf/suggestion/5c45534dcf6c753f685d6d27

Suggestion for 25 keys

Slug Mini:

https://backpack.tf/suggestion/5c456f1244325a7087779109

Suggestion for 30 keys

Total is 189 keys

Sale 2:

https://backpack.tf/profiles/76561198034633945#!/compare/1544313600/1544486400

https://backpack.tf/profiles/76561198125791160#!/compare/1544400000/1544486400

Sold with ~10 keys in sweets for Beams Falkirk

Falkirk Mini:

https://backpack.tf/suggestion/5c46a002cf6c75029a663623

Suggestion for 130 keys

Total is 120 keys

Sale 3:

https://backpack.tf/profiles/76561198025034874#!/compare/1540425600/1540512000

https://backpack.tf/stats/Strange%20Unusual/Sinner's%20Shade/Tradable/Craftable/13

Sold for Strange Burning Sinner's + HG Carribean(18) + Phos Fr-0

nothing usable on the Sinner

Sale 4:

https://backpack.tf/profiles/76561198081270783#!/compare/1540512000/1540598400

https://backpack.tf/profiles/76561198046921199#!/compare/1540512000/1540598400

Sold for 115 keys

Sale 5:

https://backpack.tf/profiles/76561198046921199#!/compare/1540598400/1540684800

https://backpack.tf/profiles/76561198120672630#!/compare/1540598400/1540684800

Sold with Beams Grimme for 183 keys

Grimme Mini:

https://backpack.tf/suggestion/5c45e68b44325a4a6f06913e

Suggestion for 76.5 keys

Total is 106.5 keys

Total sales @:

106.5, 115, 120, 189 keys

Calling 189 the outlier.

Foamy's Part:

I wouldnt rely on the "sold with X for Y pure" kind of sale that sets your low end here. Its very hard to determine how much each hat went for, let alone if there are bulk discounts in place. Another red flag here is that the person making that sale is the one that paid 115 pure a day earlier (which makes me reluctant to use either).

Im okay with 189 being the outlier here; Im fairly confident that that'd have had a lower BO anyway, but Id go 120 flat here.