Back to work on the guardians

Sale 1 :

Before : http://backpack.tf/profiles/76561198150027821?time=1428735600

After : http://backpack.tf/profiles/76561198150027821?time=1429340400

Sold for a Dead Presidents Hottie's Hoodie ( 16 keys ) but 1 key in items was added : ( 16 * 0.9 ) -1 = 13 keys

Sale 2 : http://www.tf2outpost.com/trade/26131998

Before : http://backpack.tf/profiles/76561198141112769?time=1434265200

After : http://backpack.tf/profiles/76561198141112769?time=1434351600

Sold for an Aces High Vintage Tyrolean : 20 * 0.9 = 18 keys

Sale 3 :

Before : http://backpack.tf/profiles/76561198117078254?time=1427958000

After : http://backpack.tf/profiles/76561198117078254?time=1428044400.

Sold for a Cloud 9 Hetman's Headpiece : 16 * 0.9 = 14 keys

Mini on the headpiece :

Before : http://backpack.tf/profiles/76561197978210095?time=1432882800

After : http://backpack.tf/profiles/76561197978210095?time=1433055600

Sold for a Cloud 9 Metal Slug : 18 * 0.9 = 16 keys

Thus taking the range of 13 to 18 keys.

Supportive criticism welcome.