Don't end my streak.

https://backpack.tf/profiles/76561198264591866#!/compare/1517097600/1517270400

https://steamcommunity.com/market/listings/440/Unusual%20Hong%20Kong%20Cone

= Was sold for either €100, €105 or €140. Excluding since I'm not sure.

https://backpack.tf/profiles/76561198264591866#!/compare/1517702400/1517788800

https://backpack.tf/profiles/76561198075816743#!/compare/1517616000/1517788800

= No clue.

https://backpack.tf/profiles/76561198111049983#!/compare/1517702400/1517961600

https://steamcommunity.com/market/listings/440/Unusual%20Hong%20Kong%20Cone

= Steam market again, either €100 or €120.

https://backpack.tf/profiles/76561198024925599#!/compare/1518566400/1518652800

= With ~35 in adds for a cloud 9 cone, will be low.

https://backpack.tf/profiles/76561198024925599#!/compare/1520208000/1520294400

= 70 keys pure.

https://backpack.tf/profiles/76561198045610545#!/compare/1520899200/1522454400

= Quicksold to a bot.

https://gyazo.com/e3e81667e189d8cc8bde345cfadfbf40

https://backpack.tf/profiles/76561198344933095#!/compare/1521072000/1521158400

= 57 keys pure.

https://backpack.tf/profiles/76561198329490560#!/compare/1523232000/1523318400

= Can't trace.

Sales: 57, 70. Potentially 3 sales at ~€100-105, which will pretty much be countered by buyers. €120-€140 supports the range(keys @ €2)

Last suggestion is technically in-date but is based on a sale that occurred for more than 5 months ago. Going with 57-70.