Sale 1:

https://backpack.tf/profiles/76561198119198857#!/compare/1542240000/1542326400

https://backpack.tf/profiles/76561198119198857#!/compare/1542240000/1542326400

Sold with 1 key for Searing Western

Use there, enough sales here.

Sale 2:

https://backpack.tf/profiles/76561198211062257#!/compare/1542326400/1542412800

https://backpack.tf/profiles/76561198077726791#!/compare/1542240000/1542585600

Sold with 3 keys in sweets for Aces Crasher + ~2 keys

Crasher Mini:

https://backpack.tf/suggestion/5c41625b44325a1294114e98

Suggestion for 22 keys

High here, use there.

Sale 3:

https://backpack.tf/profiles/76561198077726791#!/compare/1548028800/1548288000

https://backpack.tf/profiles/76561198256438505#!/compare/1547942400/1548288000

Sold for 14 keys

Sale 4:

https://backpack.tf/profiles/76561198256438505#!/compare/1548979200/1549065600

https://backpack.tf/profiles/76561198144819017#!/compare/1548979200/1549065600

Sold for 15 keys

Sale 5:

https://backpack.tf/profiles/76561198144819017#!/compare/1549065600/1549411200

https://backpack.tf/profiles/76561198337734785#!/compare/1549324800/1549411200

QS?

Sale 6:

https://backpack.tf/profiles/76561198337734785#!/compare/1549324800/1549411200

https://backpack.tf/profiles/76561198158206236#!/compare/1549324800/1549411200

Sold for 11 keys?

Sale 7:

https://backpack.tf/profiles/76561198339104273#!/compare/1546473600/1546560000

https://backpack.tf/profiles/76561198119631974#!/compare/1542844800/1548028800

Sold for 15 keys

Sale 8:

https://backpack.tf/profiles/76561198119631974#!/compare/1548633600/1549670400

https://backpack.tf/profiles/76561198158206236#!/compare/1549584000/1549670400

Ask CLYDE

Sale 9:

https://backpack.tf/profiles/76561198164806677#!/compare/1547164800/1547251200

https://backpack.tf/profiles/76561198200970331#!/compare/1547164800/1547251200

Sold with ~3 keys in sweets for ~16 keys in sweets

Total is 13 keys

Sale 10:

https://backpack.tf/profiles/76561198200970331#!/compare/1547164800/1547251200

https://backpack.tf/profiles/76561198875470056#!/compare/1547164800/1547251200

Sold for Aussie Flamethrower(18)

Sale 11:

https://backpack.tf/profiles/76561198832639251#!/compare/1547510400/1547596800

https://backpack.tf/profiles/76561198013519231#!/compare/1541635200/1547596800

Sold for ~14 keys

Sale 12:

https://backpack.tf/profiles/76561198013519231#!/compare/1541635200/1547596800

https://backpack.tf/profiles/76561198047636129#!/compare/1547251200/1547683200

Untrace

Sale 13:

https://backpack.tf/profiles/76561198021272428#!/compare/1542412800/1542499200

https://backpack.tf/profiles/76561198026129557#!/compare/1542499200/1543622400

Sold for 15 keys

Sale 14:

https://backpack.tf/profiles/76561198832639251#!/compare/1543708800/1543795200

https://backpack.tf/profiles/76561198190454317#!/compare/1543708800/1543795200

Bulk? keys? idk

Sale 15:

https://backpack.tf/profiles/76561198190454317#!/compare/1543795200/1543881600

https://backpack.tf/profiles/76561198043974838#!/compare/1543708800/1543968000

Untrace

Sale 16:

https://backpack.tf/profiles/76561198043936328#!/compare/1545955200/1546300800

https://backpack.tf/profiles/76561198000980532#!/compare/1545955200/1546214400

MPTF?

Sale 17:

https://backpack.tf/profiles/76561198000980532#!/compare/1547769600/1547942400

https://backpack.tf/profiles/76561198227657840#!/compare/1547942400/1548028800

Keys, can't tell how many

Sale 18:

https://backpack.tf/profiles/76561198227657840#!/compare/1548720000/1548892800

https://backpack.tf/profiles/76561198158206236#!/compare/1548806400/1548892800

Sold for 13 keys

Sale 19:

https://backpack.tf/profiles/76561198078915295#!/compare/1546560000/1546646400

SCM

Sale 20:

https://backpack.tf/profiles/76561198078915295#!/compare/1547942400/1548288000

https://backpack.tf/profiles/76561198080179568#!/compare/1548201600/1548288000

Sold for keys?

Sale 21:

https://backpack.tf/profiles/76561198080179568#!/compare/1548374400/1548460800

https://backpack.tf/profiles/76561198125350415#!/compare/1548460800/1548547200

Keys?

Sale 22 - 26:

https://marketplace.tf/items/110;5;u36

Sold for 30, 25, 25, 19.11, 25.99 USD

Keys at 1.72, 1.64, 1.65, 1.80, 1.76 USD

Totals are 17.44, 15.24, 15.15, 10.62, 14.77 keys

Total sales @:

10.62, 11, 13, 13, 14, 14, 14.77, 15, 15, 15, 15.15, 15.24, 17.44, 18 keys

Buyers up to 13 keys,

Sellers at 18 keys,

Let's go with 14 - 18 keys