Sale 1:

backpack before: http://backpack.tf/profiles/76561198118826282?time=1421222400

backpack after: http://backpack.tf/profiles/76561198118826282?time=1421395200

Sold for 5 keys and a bud

trade occurred on the 16th of January buds were 15 keys http://backpack.tf/vote/id/54b489deb98d88d9018b4623

1.33 rounded down to

1.3 buds

Sale 2:

http://www.tf2outpost.com/trade/23960876

backpack before: http://backpack.tf/profiles/76561198121549573?time=1417766400

backpack after: http://backpack.tf/profiles/76561198121549573?time=1417852800

Sold for a Steaming hat with no name (1.3)

1.3 x 0.9 =

1.17 rounded up to

1.2 buds

Sale 3:

http://www.tf2outpost.com/trade/24019900

backpack before: http://backpack.tf/profiles/76561198079451860?time=1420963200

backpack after: http://backpack.tf/profiles/76561198079451860?time=1421049600

Sold for a green confetti towering pillar (1.95)

1.95 x 0.9 =

1.755 rounded up to

1.8 buds

Taking Sale 3 as an outlier, 1.2-1.3 should be fine