https://marketplace.tf/items/tf2/30616;5;u3020

https://backpack.tf/item/3938791329 September 23: $13.99/1.76=7.52 ~7.5 keys

no buyout https://bot.tf/stats/listings/4Z3NKP30

(UNTRACEABLE) October 6: $8/1.87=4.28 keys ~4.3

https://backpack.tf/item/3905196512 October 16: $14.99/1.88=7.97 ~8 keys

no buyout https://bot.tf/stats/listings/4RDPEPJD

We have 4.3, 7.5 and 8

4.3 looks like an outlier here given the majority is in the 7.5-8 range and at the time of that sale there were buyers at ~3 keys https://bot.tf/stats/listings/M07DE8EE

I can't tell for sure if it was Marketplace.tf buy order price though since they disabled buy orders

Going 7.5-8 for now