Credit to Blaze for the help!

https://backpack.tf/item/14027148520

https://backpack.tf/profiles/76561198018333134#!/compare/1704672000/1704758400

https://backpack.tf/profiles/76561199103740298#!/compare/1704672000/1704758400

Transferred to bot

https://backpack.tf/item/13388560065

https://backpack.tf/profiles/76561198064724507#!/compare/1707177600/1707264000

https://gyazo.com/c783a2447f74a8202ce9d771b9ad3385 - 10 key trade

https://gyazo.com/3f5100dc214a5e4ae0aa67361045ad10 - Bubbling Breeze Sky High Fly Guy

I crabbed my friend Bofink for a key, so that's probably why the compare only showed 9 keys.

10 keys

https://backpack.tf/item/13388560065

https://backpack.tf/profiles/76561198350622069#!/compare/1707436800/1707523200

https://backpack.tf/profiles/76561199186313766#!/compare/1707436800/1707523200

It only tracks 26 ref. I'm not too sure if I want to include. I'll exclude this for now

Blaze:

https://marketplace.tf/items/tf2/30984;5;u290 - sold for $32.99 (19 keys)

https://backpack.tf/profiles/76561198156852291#!/compare/1710633600/1710720000

https://backpack.tf/profiles/76561198114899125#!/compare/1710633600/1710720000 - sold for 9 keys

https://backpack.tf/profiles/76561199103740298#!/compare/1708992000/1709078400

https://backpack.tf/profiles/76561198156852291#!/compare/1708992000/1709078400 - sold for 15 keys

Going with a range of 10 - 19 keys

Feedback welcome! Thanks!