sold for 9 keys

https://backpack.tf/profiles/76561198062425416#!/compare/1559260800/1559347200

sold for 19 keys

https://backpack.tf/profiles/76561198095186098#!/compare/1549843200/1556150400

sold with kill a watt hot dogger for hg safe n sound + 1 key

https://backpack.tf/profiles/76561198261268231#!/compare/1556323200/1556409600

not using as its better for the safe n sound

sold for 18 keys

https://backpack.tf/profiles/76561198220577128#!/compare/1556323200/1556409600

sold with about 38 ref of items for steaming mining light

https://backpack.tf/profiles/76561198158206236#!/compare/1556841600/1556928000

https://backpack.tf/profiles/76561198220577128#!/compare/1556841600/1556928000

here are the sellers at the time i made the suggestion

https://gyazo.com/3c6c28d2f3e3709664d4557a0a19590a

here are the buyers at the time i made the suggestion

https://gyazo.com/3a58908ab4110e9b47715d8083121042

9 is low, using sales of 18 and 19 to make a range of 18-19 keys.