Sparktre

https://backpack.tf/item/2674482062

Sale 1) Sold for a Blizzardy Storm Bomber's Bucket Hat

https://backpack.tf/profiles/76561197960631065#!/compare/1505952000/1506124800

This sale would be better used to update the Bucket Hat's price since that was last priced roughly 2 Years ago.

Sale 2) Sold for a Miami Nights Killer's Kabuto (28 Keys)

https://backpack.tf/profiles/76561198224899376#!/compare/1506038400/1506124800

Sale 3) Quicksold for 25 Keys

https://backpack.tf/profiles/76561198154190042#!/compare/1506038400/1506124800 - Buyer's Backpack

Sale 4) Sold + Dead Presidents El Jefe for a Green Energy Fed-Fightin' Fedora

https://backpack.tf/profiles/76561198069825031#!/compare/1506729600/1506902400 - Buyer's Backpack

Supports the high end.

Sale 5) Sold for a Smoking Wraith Wrap (21 Keys) + 6 Keys

https://backpack.tf/profiles/76561198069825031#!/compare/1507248000/1507334400

21 + 6 = 27 Keys

Sale 6) Sold + 1 Key for an Aces High Neckwear Headwear

https://backpack.tf/profiles/76561198317115999#!/compare/1508716800/1508803200

Fits in the range.

https://backpack.tf/item/1911127772

Sale 7) Sold for an Aces High Chill Chullo (31 Keys) + Negligible Sweets

https://backpack.tf/profiles/76561198126979379#!/compare/1507248000/1507334400

Rounds to 31 Keys

Sale 8) Sold for a Flaming Lantern Western Wear

https://backpack.tf/profiles/76561198066088030#!/compare/1507420800/1507507200

Since there is a Classified Seller for the Western at ~22 Keys and a 2 Month Unsold at 28 Keys, this sale is a low Outlier ---> https://imgur.com/a/fN4Au

Sale 9) Sold for a Morning Glory Prancer's Pride

https://backpack.tf/profiles/76561198350044920#!/compare/1507766400/1507852800

http://www.tf2outpost.com/trade/29397272 - Capped by the Buyout of 25 Keys

https://backpack.tf/item/1946141014

Sale 10) Sold for an Aces High Das Ubersternmann + 2 Keys

https://backpack.tf/profiles/76561198355604078#!/compare/1505865600/1505952000

Supports the high end.

Sale 11) Sold + Kill-a-Watt Pith Helm for a Circling Heart Triboniphorous Tyrannus

https://backpack.tf/profiles/76561198048479665#!/compare/1506556800/1507161600

Low Outlier because of these Unsolds on the Trib ---> https://imgur.com/a/qrMIl

Sale 12) Bulk sale.

https://backpack.tf/profiles/76561198219681600#!/compare/1507161600/1507248000

Sale 13) Bulk sale.

https://backpack.tf/profiles/76561198129402515#!/compare/1507161600/1507248000

Sale 14) Bulk for the Pyromancer's Hood

https://backpack.tf/profiles/76561198168863803#!/compare/1507680000/1507766400

Sale 15) Bulk sale.

https://backpack.tf/profiles/76561198071983249#!/compare/1507680000/1507766400

Sale 16) Sold for 20 Keys

https://backpack.tf/profiles/76561198108035080#!/compare/1507852800/1507939200

Low Outlier

Sale 17) Sold for a Specialized Killstreak Australium Rocket Launcher (~33 Keys)

https://backpack.tf/profiles/76561198148833495#!/compare/1508112000/1508371200 - Buyer's Backpack

Sale 18) Sold + 6 Keys + ~2 Keys of Items for a Vivid Plasma Towering Pillar of Hats (40 Keys)

https://backpack.tf/profiles/76561198148833495#!/compare/1508371200/1508457600

40 - 6 - 2 = 32 Keys

Pillar Mini

https://backpack.tf/suggestion/5a0ce889cf6c75314b0d5942 - 40 Keys

Sale 19) Sold for an Unusual Medi Gun

https://backpack.tf/profiles/76561198088057122#!/compare/1509062400/1509148800

Can price that.

https://imgur.com/a/1xESg - 2 Sellers at 22 Keys