Resuggesting to 2.4 flat with new proof. Credits to Faaa97 for providing three additional sales to support the raise.

Countering and fixing my range for real with the proof i didn't have before.

Classifieds

http://imgur.com/kHH5sB0

http://imgur.com/7VlfZbG

Buyers on Outpost for ~2.3 keys (2 keys + 5 ref)

http://www.tf2outpost.com/trade/25954260

http://www.tf2outpost.com/trade/24898478

http://www.tf2outpost.com/trade/26660666 ------ closed his trade, probably after reaching his inventory limit of 10.

Sales for ~2.4 keys (2 keys + 6 ref)

http://www.tf2outpost.com/trade/26625695 ------- even with "poor" bumping (thanks to Teeny Tiny Cat)

http://www.tf2outpost.com/trade/26696931 ------- probably sold more than one.

https://i.gyazo.com/2d07e38a4606560872993579722706b0.png ( https://i.gyazo.com/35f3f68e9f5bb72591eeb0477a406a65.png ) --- thanks to Faaa97

https://i.gyazo.com/aad6038596c233aa4e25442b999fc793.png ( https://i.gyazo.com/3187d78d2415d472ad857b38d902b491.png ) --- thanks to Faaa97

https://i.gyazo.com/f8b3481e5b8fdeed74e15a408d81b1a6.png ( https://i.gyazo.com/d5032e1d43d84e594d4d221bfce5e179.png ) --- thanks to Faaa97

Summary

- Around 7 buyers for ~2.3 keys.

- At least five sales for ~2.4 keys (probably a lot more, but tracking bulk buyers/sellers is hard).

Proof for 2.4 keys seems enough now.

Criticism is appreciated!