Rich Bubble Quan

http://backpack.tf/item/640647763

Sale 1) Sold for 16 Keys

http://backpack.tf/profiles/76561198125791160#!/compare/1494374400/1494460800

http://backpack.tf/item/1437910025

Sale 2) Sold for a Smoking L’homme (13 Keys) + 1 Key

http://backpack.tf/profiles/76561198204709704#!/compare/1490659200/1490745600

13 + 1 = 14 Keys

Sale 3) Sold + ~3 Keys of Items for a Terror-Watt Allbrero (22 Keys)

http://backpack.tf/profiles/76561198079578383#!/compare/1490918400/1491004800

High Outlier.

Sale 4) Sold for 15 Keys

http://backpack.tf/profiles/76561197963500354#!/compare/1494374400/1494460800

http://backpack.tf/item/1583707108

Sale 5) Sold + ~4 Keys of Items for a FN Cool Blitzkrieg SMG

http://backpack.tf/profiles/76561198369860557#!/compare/1492646400/1492732800

High Outlier

Sale 6) Sold for a Stormy Storm Bonk Helm

http://backpack.tf/profiles/76561198353963848#!/compare/1492905600/1493078400

Fits in the range.

Sale 7) Sold for 14 Keys + ~1 Key of Items

http://backpack.tf/profiles/76561198350362515#!/compare/1493510400/1493596800

14 + 1 = 15 Keys

http://backpack.tf/item/1671537455

Sale 8) Sold for a Cloud 9 Buckaroos Hat (14.5 Keys)

http://backpack.tf/profiles/76561198283555464#!/compare/1492300800/1492473600

Rounding to 15 Keys

Buckaroos Mini

http://backpack.tf/suggestion/59263af2e338775292289b23 - 14.5 Keys