[RESUGGESTION]

Credits to Alberny for sources:

https://backpack.tf/profiles/76561198076912592#!/compare/1501804800/1501891200

Cloud 9 Ye Olde Baker Boy ~33

http://www.tf2outpost.com/trade/29231335

buyout was 30

https://backpack.tf/profiles/76561198035701234#!/compare/1502236800/1502323200

https://backpack.tf/profiles/76561198341086501#!/compare/1502150400/1502236800

added 7 for a Strange Professional Killstreak Australium Scattergun ~32

http://www.tf2outpost.com/trade/29312446

bo was 41

makes 25, eh, not sure

https://backpack.tf/profiles/76561198069951512#!/compare/1498780800/1498867200

24, qsold - http://www.tf2outpost.com/user/76561198069951512?itemid=5918700659

https://backpack.tf/profiles/76561198104191240#!/compare/1501977600/1502323200

https://backpack.tf/profiles/76561198236788328#!/compare/1502064000/1502150400

27 Keys and some ref

http://www.tf2outpost.com/user/76561198104191240?itemid=5927586171

bo was ~ 30/31 for a while

https://backpack.tf/profiles/76561198254882851#!/compare/1502409600/1502496000

https://backpack.tf/profiles/76561198236788328#!/compare/1502150400/1502496000

high outlier?

https://backpack.tf/profiles/76561198254882851#!/compare/1502582400/1502668800

using on sultan, 2 years outdated

https://backpack.tf/profiles/76561198049149130#!/compare/1498953600/1499040000

27 and ~0.5 in sweets

This is a ridiculously overpriced spy unusual which hasn't been sold for more than 30 pure.