Another offer at full price, another suggestion...

Sellers: 40 by the instant bot and 45 unsold in a month, which proves that current range not valid anymore.

https://ibb.co/mTxsUk

Sales:

1.

It's A Secret To Everybody Birdcage

https://backpack.tf/profiles/76561198068450551#!/compare/1497312000/1497398400

Indate, 40-48. But here we've got sale for 38 pure

https://backpack.tf/profiles/76561198068450551#!/compare/1500249600/1501027200

So taking low-end.

X1 = 40.

Or it would be better to concider this as 38, but this not mean very much, because:

2.

Sold for ~38 keys in mix of keys and items

https://backpack.tf/profiles/76561198091164368#!/compare/1500595200/1500854400

X2 = 38

3.

Bulk, ~42

https://backpack.tf/profiles/76561198091986289#!/compare/1499040000/1499126400

But suggestion for Cloud 9 Peacenik's Ponytail not accepted, so take this into account, and let's assume that as 40 keys, with the support of the current proposal.

X3 = 40.

Well, we've got one sale at 38-40, another at ~38, and one more that pretty close to 40 keys. And the instant bot at 40, I don't see why somebody can give him more than he asked.