Please feel free to comment any suggestions to my research :)

Sales:

Sale #1:

x1 19 key Seller ended up selling to bot for 18 keys: https://backpack.tf/profiles/76561199104559253#!/compare/1687737600/1687910400

====== Notes ========

Has been unsold by bots for a while. since 11th July at 20 keys 40 ref. https://gladiator.tf/time-machine?item=Starstorm+Insomnia+Spirit+of+the+Bombing+Past&at=2023-08-01T12%3A20%3A00.000Z

The bots seem to renew each week so there is one that was up till the 10th at 18 keys 59 ref https://gladiator.tf/time-machine?item=Starstorm+Insomnia+Spirit+of+the+Bombing+Past&at=2023-07-10T13%3A35%3A00.000Z

More data here at 19 keys 55.88 ref https://gladiator.tf/time-machine?item=Starstorm+Insomnia+Spirit+of+the+Bombing+Past&at=2023-06-20T13%3A35%3A00.000Z

x2 Seller for 19 keys here (including the 18 key one sold to bots) https://gladiator.tf/time-machine?item=Starstorm+Insomnia+Spirit+of+the+Bombing+Past&at=2023-06-25T13%3A35%3A00.000Z

Due to this being sold at 18 keys (now same as sellers) and being unsold at 19 for quite some time with lots of sellers at 19, I think it is fair to drop the price to 19.

You can see bot Erick lists it for 18 keys 76 ref on the 30th of June https://gladiator.tf/time-machine?item=Starstorm+Insomnia+Spirit+of+the+Bombing+Past&at=2023-06-30T13%3A50%3A00.000Z

But is still selling it for 18 keys 59 ref on the 10th of July https://gladiator.tf/time-machine?item=Starstorm+Insomnia+Spirit+of+the+Bombing+Past&at=2023-07-10T13%3A50%3A00.000Z

So Erick did not sell it (Transfer to another bot) for under 19 keys for a week and a half and it still remains unsold.

Actually I found another sale only just in date.

June 13 keys were 1.98 https://marketplace.tf/items/tf2/5021;6

Sold June 13 for $49.99 https://marketplace.tf/items/tf2/30807;5;u109

49.99 / 1.98 = 25 keys.

Seems an outlier compared to notes and sale and current sellers.