Let's redo.

https://backpack.tf/item/12284899084

https://backpack.tf/profiles/76561198311498888#!/compare/1747440000/1747526400

https://backpack.tf/profiles/76561199114348675#!/compare/1747440000/1747526400

https://imgur.com/a/lasEy9W

4 pure + 27.33 ref

https://imgur.com/a/cp4cZe3 STN buys higher

https://backpack.tf/profiles/76561199114348675#!/compare/1747612800/1747699200

https://backpack.tf/profiles/76561198161886698#!/compare/1747612800/1747699200

https://imgur.com/a/fSGHRCb

5 pure + 15 ref + Quackenbirdt (2.11) = previously rounded up to 5.5 becomes just 5.25

Mindacos:

Added ~1.5 Keys in Sweets for a Strange Spec KS Psychedelic Slugger Revolver

https://backpack.tf/profiles/76561198874905974#!/compare/1749340800/1749427200

https://backpack.tf/profiles/76561198161886698#!/compare/1748995200/1749600000

I can't narrow down a mini for the revolver, but this sale is likely to be below 5.5 Keys seeing as there's a non-killstreak unsold for $12 on SCM: https://steamcommunity.com/market/listings/440/Strange%20Psychedelic%20Slugger%20Revolver%20%28Field-Tested%29

To be on the safe side here and to prevent this from having to go unpriced, the ~4.4 sale should be included for a range of 4.4-5.25, as the revolver sale will definitely fall somewhere in this range, and the median being lower than 5 Keys means that the 5.5 sale no longer rounds up. It's inconclusive to say that 5.25 resold for less, so we don't have to call it invalid here.

Taking 4.4-5.25.