Sale 1:

backpack before: http://backpack.tf/profiles/76561198071672792?time=1419840000

backpack after: http://backpack.tf/profiles/76561198071672792?time=1419926400

Harvest Moon panama + Non-craftable Flip-Flops (4 keys), strange specialied killstreak rust botkiller mk1 (1.5 keys), 10 keys for haunted ghosts master's yelow belt (5.05)

Trade occured on the 29th of December, buds were 13 keys: http://backpack.tf/vote?quality=6&item=Earbuds&tradable=1&craftable=1&state=0,1,2&page=5

http://www.tf2outpost.com/trade/23966380 harvest moon owner had offered on the belt thus no overpay calculated

x + 0.33 + 0.125 + 0.77 = 5.05

3.825 rounded down to

3.8 buds

Sale 2:

backpack before: http://backpack.tf/profiles/76561198061573538?time=1420963200

backpack after: http://backpack.tf/profiles/76561198061573538?time=1421049600

secret to everybody hetman's (2.15) + strange australium wrench (2.17) + 4 keys

Trade occured on the 11th January, buds were 14.5: http://backpack.tf/vote?quality=6&item=Earbuds&tradable=1&craftable=1&state=0,1,2&page=4

0.9(2.15+ 2.17) + 0.28

= 4.17 rounded up to

4.2 buds

strange specialied killstreak rust botkiller mk 1 Mini

http://www.tf2outpost.com/trade/25050748 b.o of 2 keys

http://www.tf2outpost.com/trade/24971462 b.o of 12 ref

http://www.tf2outpost.com/trade/24995897 sold for 2 keys

Taking as 1.5 considering SCM sales also

Master's yellow belt Haunted ghosts mini: http://backpack.tf/vote/id/54df21e6ba8d8851608b4e9a