First time suggester; hopefully all goes well!

Special thanks to Burn from the backpack.tf suggestion's team on the community discord!

Sale 1:

https://imgur.com/a/TbHFaqt

https://backpack.tf/profiles/76561198335791307#!/compare/1593216000/1593302400

bot.tf sale for 35 keys.

Sale 2:

https://backpack.tf/profiles/76561198071381455#!/compare/1593475200/1593561600

https://backpack.tf/profiles/76561198363395191#!/compare/1593475200/1593561600

untrace, qs?

https://bot.tf/stats/listings/YD1KK8DV

https://bot.tf/stats/listings/Y9Q193L6

Juice's itembot's buy order disappeared after the sale, safe to assume it went to a buy order.

https://backpack.tf/item/7311178581 - 35 resold for lower in 2 days. Possible buyer's regret

Sale 3:

https://backpack.tf/profiles/76561198098005577#!/compare/1591488000/1591660800

https://backpack.tf/profiles/76561198055622215#!/compare/1591488000/1591574400

pfetti party phantom, indate at 29 keys

no b/o found

Sale 4:

https://backpack.tf/profiles/76561198055622215#!/compare/1592092800/1592179200

https://backpack.tf/profiles/76561198370337870#!/compare/1592092800/1592179200

bulk for burning pyro's beanie

Sale 5:

https://backpack.tf/profiles/76561198370337870#!/compare/1592265600/1592352000

https://backpack.tf/profiles/76561198143710298#!/compare/1592092800/1592352000

https://imgur.com/a/C6TRECl

the sale was for 30 keys

outlier extra: 1 seller on marketplace at 99.95$ (roughly 54 keys) https://marketplace.tf/items/tf2/30658;5;u119

Sales are at:

29

30

35

Classifieds - https://imgur.com/a/phnUuDJ

No sellers, buyers at 19 keys.

Since the sale for 35 was dumped to a buy order within 2 days of purchase, excluding 35.

Taking the range as 29 - 30 keys!