I spent 5 minutes thinking of a pun, nothing came to mind :/

Sale 1 (2 Buds)

Sold with a AH Defiant Spartan (~1.5) + 1 bud for a DBD Anger (5 buds)

Helm history > http://www.tf2outpost.com/item/440,2831681319,30357,5 + Spartan History http://www.tf2outpost.com/item/440,2796306705,340,5 + Bud history > http://www.tf2outpost.com/item/440,2808160870,143,6

Anger history > http://www.tf2outpost.com/item/440,2877034481,518,5

5 - (1.5 * 0.9 = 1.35) = 3.65 - 1 = 2.65 * 0.9 = 2.385 rounding to 2.4 Buds

Price has to be 2 buds because the B/O was set at 2 buds http://www.tf2outpost.com/trade/21758597

Sale 2 (1.8 Buds)

Sold for Miami Slick Cut

Falkirk History > http://www.tf2outpost.com/item/440,3002906377,30357,5

Miami history > http://www.tf2outpost.com/item/440,3018013327,30187,5

2 * 0.9 = 1.8 Buds

Mini on Spartan

Sold for KaW Scots Stove Pipe 1.5 buds

Spartan history > http://www.tf2outpost.com/item/440,2982151154,340,5

Stove Pipe history > http://www.tf2outpost.com/item/440,2986181715,120,5

1.65 * 0.9 = 1.485 rounding to 1.5 buds

This is the only recent sale I can track