Only recent valid sale:

Sold for a Secret Connoisseur's cap + S. MW Liquid Asset (SCM at 17)

http://backpack.tf/profiles/76561198044027534?time=1445842800&compare=1445756400

(150 + 17) X 0.9 = 150

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Unusable sales:

Sale 1:

Sold alongside a Miami Falkirk Helm + Steaming Brain Bucket for a Ghosts JR. Relaxo (should be used to update the Relaxo)

http://backpack.tf/profiles/76561198044027534?time=1444633200&compare=1444806000

Sale 2:

Sold for a duped Lantern Stash + ~3 keys' sweets (outlier)

http://backpack.tf/profiles/76561197995194055?time=1447660800&compare=1447574400

(95 X 0.9) + 3 = 90

Stash mini:

Sold alongside a Mallard Exe for a HG TC + pro aussie BB (~30)

http://backpack.tf/profiles/76561198130596640?time=1442818800&compare=1443164400

(225 + 30) - 160 = 95

Exe micro:

Sold for 160 keys' worth of buds

http://backpack.tf/profiles/76561198057673841?time=1442559600&compare=1442646000