Mini.

Sale 1: https://backpack.tf/profiles/76561198939623625#!/compare/1581292800/1581379200

https://backpack.tf/profiles/76561198311437371#!/compare/1581292800/1581379200

Sold with a ~key in adds for a Blizzardy Storm Gentleman's Gatsby (14 keys)

14 - 1 = 13

Mini for the Gatsby: https://backpack.tf/suggestion/5e76016c92171e5a1e1e2d69

Sale 2: https://backpack.tf/profiles/76561198055622215#!/compare/1580774400/1580860800

https://backpack.tf/profiles/76561198338424715#!/compare/1580774400/1580860800

Sold for Infernal Flames Taunt: Skullcracker + Spelled item.

Sale 3: https://backpack.tf/profiles/76561198338424715#!/compare/1580860800/1580947200

https://backpack.tf/profiles/76561198087806226#!/compare/1580774400/1580860800

?

Sale 4: https://backpack.tf/profiles/76561198087806226#!/compare/1581206400/1581292800

https://backpack.tf/profiles/76561198059874094#!/compare/1581206400/1581292800

Sold for a Purple Confetti Executioner (15 keys)

Sale 5: https://backpack.tf/profiles/76561198059874094#!/compare/1581292800/1581379200

https://backpack.tf/profiles/76561198136810646#!/compare/1581206400/1581292800

I counted 14 pure.

Sale 6: https://backpack.tf/profiles/76561198136810646#!/compare/1581206400/1581292800

https://backpack.tf/profiles/76561198251982584#!/compare/1581033600/1581292800

?

Sale 7: https://backpack.tf/profiles/76561198251982584#!/compare/1581033600/1581292800

https://backpack.tf/profiles/76561198862763731#!/compare/1581206400/1581292800

?

Sale 8: https://backpack.tf/profiles/76561198311437371#!/compare/1582416000/1582502400

https://backpack.tf/profiles/76561198171538677#!/compare/1582416000/1582502400

Bulk.

Sale 9: https://backpack.tf/profiles/76561198339679572#!/compare/1579651200/1579996800

https://backpack.tf/profiles/76561198190714350#!/compare/1579910400/1579996800

Sum qs.

Sale 10: https://backpack.tf/profiles/76561198190714350#!/compare/1580256000/1580342400

https://backpack.tf/profiles/76561197993860970#!/compare/1580256000/1580342400

17 pure.

Additional by Minda:

Comes up to ~20 Keys using $1.69 value.

20 Keys shouldn't be too high here.

Looking at your 14 Key sale, it seems to have been a quicksale as it wasn't owned for more than a day, which would make sense given the buyers at 14 currenctly.

I'd go with 15-20 here. It could be argued that 15 is low due to SCM buyers, but it could also be argued that 20 is high due to unsolds, so having a range solves both those issues.

Sales: 13, 15, 14, 17 and 20. Classies: https://i.imgur.com/lJT48Gc.png. Going with 15-20.