Resuggestion, thanks to Foamy for the info!

Sale 1:

https://backpack.tf/profiles/76561198313248492#!/compare/1550534400/1550620800

https://backpack.tf/profiles/76561198886250502#!/compare/1550448000/1550620800

Bulk / scam?

Sale 2:

https://backpack.tf/profiles/76561198516017657#!/compare/1550448000/1550707200

https://backpack.tf/profiles/76561198127938353#!/compare/1550620800/1550707200

bought from scrap, sold for 26 keys.

Sale 3:

https://backpack.tf/profiles/76561198127938353#!/compare/1550966400/1551052800

https://backpack.tf/profiles/76561198388344488#!/compare/1550620800/1551052800

Untrace

Sale 4:

https://backpack.tf/profiles/76561198342161127#!/compare/1548979200/1549065600

https://backpack.tf/profiles/76561198886590484#!/compare/1548892800/1549411200

SCM

Sale 5:

https://backpack.tf/profiles/76561198055552635#!/compare/1547337600/1547424000

https://backpack.tf/profiles/76561198119634686#!/compare/1547337600/1547424000

Sold with 2 keys for DBD Trilby

Trilby Mini

https://backpack.tf/suggestion/5cb0001867807279d621bc45

Suggestion for 29.5 keys

Total is 27.5 keys

Sale 6:

https://backpack.tf/profiles/76561198119634686#!/compare/1548288000/1548374400

https://backpack.tf/profiles/76561198058540459#!/compare/1466467200/1548979200

SCM

Sale 7:

https://backpack.tf/profiles/76561198275222296#!/compare/1554768000/1554854400

https://backpack.tf/profiles/76561197994697258#!/compare/1554768000/1554854400

Bulk QS

Sale 8:

https://backpack.tf/profiles/76561198029656594#!/compare/1548201600/1548288000

https://backpack.tf/profiles/76561198158206236#!/compare/1548201600/1548288000

Sold for 23 keys

Sale 9:

https://backpack.tf/profiles/76561198158206236#!/compare/1548720000/1548806400

https://backpack.tf/profiles/76561198038833126#!/compare/1548633600/1548806400

Sold for Steaming Coldsnap + 4 keys

Coldsnap Mini:

https://backpack.tf/suggestion/5cb01188d381723aaa220a94

Suggestion for 21.5 keys

Total is 25.5 keys

Sale 10:

https://backpack.tf/profiles/76561198038833126#!/compare/1549929600/1550016000

https://backpack.tf/profiles/76561198342161127#!/compare/1549929600/1550016000

Sold for ~25 keys

Sale 11 - 14:

https://marketplace.tf/items/54;5;u31

$48.00 / $1.8 = 26.67 keys

$50.00 / $1.78 = 28.09 keys

buy order

$55.00 / $1.77 = 31.07 keys

Total sales @:

23, 25, 25.5, 26, 26.67, 27.5, 28.09, 31.07 keys

Foamy's Part:

Im fine keeping 25 out on account of buyers, but I see no reason to keep 31 in, since it makes the outliers pretty unbalanced. I'd remove that as well as a good measure of balance, and make this 26-28