Sale 1:

https://backpack.tf/profiles/76561198011321852#!/compare/1550275200/1550361600

https://backpack.tf/profiles/76561198094744576#!/compare/1549756800/1550361600

= 25 keys + 13 refined metal

~ 25 keys

Sale 2:

https://backpack.tf/profiles/76561198036445124#!/compare/1545091200/1545264000

https://backpack.tf/profiles/76561198271779382#!/compare/1544918400/1545350400

= 35 keys (although the IDs of the keys are unclear, I have confirmed with CAaronD that it did sell for this price, I will request for screenshots if needed or indicated).

Sale 3:

https://backpack.tf/profiles/76561198271779382#!/compare/1547251200/1547337600

https://backpack.tf/profiles/76561198156255538#!/compare/1547251200/1547337600

Bulky

Summary: 25, 35

Conclusion: Pricing at 35 keys. Excluding Sale 1 due to it being below buy orders.

Confirmation from seller that it sold for 35 keys (Sale 2) https://imgur.com/a/3lOWWez