3 months old, an aussie sale and some outliers!

Sale 1 (27.37 keys in value ≈ 27 keys):

http://backpack.tf/profiles/76561198057671085#!/compare/1487203200/1487289600 (+Professional Killstreak Aussie Scattergun - 6 keys pure - Head Warmer)

http://imgur.com/a/fiRkf (6 keys pure), http://imgur.com/a/JXNGy (proof of correct effect), http://imgur.com/a/oEpS7 (proof of correct killstreak)

Mini for Aussie Scattergun (33.37 keys pure):

http://backpack.tf/profiles/76561198057671085#!/compare/1487289600/1487376000 (+34 keys - 17.55 refined)

http://imgur.com/a/DqY9l (keys gained and metal lost), http://imgur.com/a/5KIzG (proof of correct killstreak of Aussie Scattergun)

Sale 2 (18.2 keys pure) (outlier):

http://backpack.tf/profiles/76561198057671085#!/compare/1490400000/1490832000 (bought for 18.2 keys pure)

This sale is an outlier due to being bought via a quicksell buy order by yours truly (myself).

Tf2outpost quickbuyers that counter this sale:

http://www.tf2outpost.com/trade/28834915 (buys for 19 keys)

http://www.tf2outpost.com/trade/28707841 (buys for 18 keys)

Note for Polar: with the previous suggestion you saidd that there were 2 pure sales of this item http://backpack.tf/item/2330225364 and I have only been able to find 1 sale with an exchange of pure for the unusual in this item's history from Januar to March of this year. So if you may, could you point out the second pure sale?

Evidence, counter-evidence and feedback is appreciated.