Credits to all from previous suggestion

Sellers/Buyers

https://imgur.com/a/dbuPMu0

Young seller at 20.14k supports drop

Sale 1: Aces High Neckwear Headwear (indate @ 17.5 rounding to 18) + 3 keys pure

https://backpack.tf/profiles/76561198355667850#!/compare/1530057600/1530144000

Taking 21 keys

Sale 2: Sold w/ 1 key and 12 ref for Smoking Bombing Run + Disco Beat Down Elf Esteem

https://backpack.tf/profiles/76561198097283109#!/compare/1526774400/1526860800

Couldn't find any minis for bombing or elfin as they were either untrace or bulk

Taking 9 keys on Bombing Run as there's an unsold seller @ 8.66k which I'm rounding to 9 and buyers @ 8.32 k

Taking 12 keys for big elfin deal with two unsolds for 5 - 10 days at that price

12 + 9 = 21 - 1.3 = 19.7 rounding to 20k

Taking 20k for sale

Sale 3: Sold for Searing Plasma Safe n' Sound (indate @ 22k) + 1k + 1 earbuds (1.65 rounding to 2 keys)

https://backpack.tf/profiles/76561198256677589#!/compare/1526860800/1527033600

22 + 1 + 2 = 25

Sale 4: Sold w/ ~2.5k in items for Stormy Storm Battle Boonie

https://backpack.tf/profiles/76561198254620348#!/compare/1524960000/1525046400

Excluding since this sale was used to price the boonie

Sale 5: 19 keys pure

https://imgur.com/a/RGCD2kw

https://imgur.com/a/JjLxIN4

Valid sales we have are 19, 20, 21, 25

Taking range 19-21

Calling 25 an outlier

Any feedback or more sales would be nice

Thanks.