Sale 1: 19 keys + 10 ref; was sold to R+UBI so likely a QS

https://backpack.tf/profiles/76561198036445124#!/compare/1500854400/1500940800

Sale 2: 22 keys pure; took about a week to sell

https://backpack.tf/profiles/76561198131440884#!/compare/1501545600/1501632000

Sale 3: 21 keys pure

https://backpack.tf/profiles/76561198131440884#!/compare/1501718400/1501804800

Sale 4: Sold for Memory Leak Backbiter's Billycock (16) + 11 keys pure + ~3.7 keys in items --> 30.7; rounding o 31

https://backpack.tf/profiles/76561198139656272#!/compare/1501804800/1501891200

Mini Billycock: Suggestion at 16 https://backpack.tf/suggestion/597daf34cf6c751e884e5c75

Sale 5: Untraceable

https://backpack.tf/profiles/76561198116821354#!/compare/1498608000/1498694400

Sale 6: Untraceable

https://backpack.tf/profiles/76561198204995668#!/compare/1499385600/1499472000

Sale 7: Untraceable

https://backpack.tf/profiles/76561198080669489#!/compare/1500854400/1500940800

Sale 8: Untraceable

https://backpack.tf/profiles/76561198114325442#!/compare/1501113600/1501200000

Sale 9: ID's don't match

https://backpack.tf/profiles/76561198120030437#!/compare/1501200000/1501286400

Sale 10: 21 keys; took over a week to sell; not a QS

https://backpack.tf/profiles/76561198015384426#!/compare/1502236800/1502323200

Sales at: 19, 21, 21, 22, 31

Buyers at 18. Sellers at 30 http://i.imgur.com/lplmfK3.png

Suggesting range from 21-22 and calling 31 a high outlier. Sale 1 (19 keys) is likely a quicksell because it sold to R+Ubi.