Some people, just dont know what they're saying.

Sale 1: Sold for an orbiting fire brain bucket[12.5 keys]

http://backpack.tf/profiles/76561198113302325?time=1431414000

http://backpack.tf/profiles/76561198113302325?time=1431932400

12.5*0.9=11.25 rounding to 11

Sale 2: Bulk deal?

http://backpack.tf/profiles/76561198068429580?time=1431068400

http://backpack.tf/profiles/76561198068429580?time=1431154800

Sale 3: Sold for 10 pure keys

http://backpack.tf/profiles/76561198119384188?time=1430031600

http://backpack.tf/profiles/76561198119384188?time=1430204400

Sale 4: Sold with Pool party[3 keys] for logo buckaroos[13 keys via mini]

http://backpack.tf/profiles/76561198087195582?time=1430636400

http://backpack.tf/profiles/76561198087195582?time=1430809200

13-3=10

Mini on Buckaroo: Sold for DBD trenchers[14 keys]

http://backpack.tf/profiles/76561198087195582?time=1430895600

http://backpack.tf/profiles/76561198087195582?time=1430982000

14*0.9=12.6 rounding to 13

2 sales at 10, 1 at 11.

Taking final range of 10-11 keys.