All Credits to Shuffle Spy

Sale 1: 100 keys pure

Proof - https://i.imgur.com/vJV01dU.png

Item History - https://backpack.tf/item/1249734603

Sale 2: 150 keys pure

Proof - https://i.imgur.com/9EATM8M.png

Item History - https://backpack.tf/item/1249734603

Sale 3: 95 keys pure

Proof - https://i.imgur.com/UEzwwi4.png

Item History - https://backpack.tf/item/1210325022

Sale 4: 120 keys pure

Proof - https://i.imgur.com/JJjr7M7.png

Item History - https://backpack.tf/item/1210325022

It seems as though the second sold for 150 only because a collector was trying to own both and was willing to pay more than normal to get the 2nd.

https://cdn.discordapp.com/attachments/298484282228211714/1043313603379478569/image.png

As such, it'd be best to exclude 150. 95 - 120 would work here.

Going 95-120k

Ty to Critch and Shuffle!