Only counting sales This and Last Month.

https://mannco.store/item/1613

--Sale 1--

14.74/1.68 = 9 Keys rounded.

17/1.71 = 10 Keys rounded.

https://marketplace.tf/items/tf2/30662;5;u97

--Sale 2--

16.99/1.87 = 9 Keys Rounded.

16.99/1.89 = 9 Keys Rounded.

16.99/1.9 = 9 Keys Rounded.

16.99/1.9 = 9 Keys Rounded.

16.99/1.85 = 9 Keys Rounded

16.99/1.85 = 9 Keys Rounded.

16.99/1.85 = 9 Keys Rounded.

Gladiator.tf

--Sale 3--

https://gladiator.tf/sales?item=Galactic%20Codex%20A%20Head%20Full%20of%20Hot%20Air

1 Sold @9 Keys

2 Bought @8 Keys 17.66 Refined Rounding to 8 Keys

1 Bought@8 Keys 9.88 Refined Rounding to 8 Keys

BP.TF listings

--Sale 4--

https://backpack.tf/item/4718852810 - Not counting hana - sticker. They are gamblers and I have already counted the sales on mp.tf + mc.s

https://gladiator.tf/listings/61adfd1d681d2db106f26f4c

Bought for 8 Keys 17 Refined. Rounding to 8 Keys

--Sale 5--

https://backpack.tf/item/7088488814

https://gladiator.tf/listings/6183599b125ad8b042a4b532

Sold for 8 Keys 54.66 Refined Rounding to 9 Keys

--Sale 6--

https://backpack.tf/item/4247775482

Untraceable.

This gives us a range of 8-10 keys. which updates the old price buy 1.5 Keys.