Link4, After: Has eerie el jefe and 3 crate 40s (histories check out)

C. Bubbles Rag (24-31 keys NOTE: Backpack.tf price is old, probably around 1.3)

P. Fetti Veil (??? - ???)

Crate 40 (12 keys, month old)

Eerie El jefe (5-6 buds, Also might be old, seems low)

DIFFERENCE = (5.5 - [1.3+.5] = 3.7 buds (NOTE: El jefe price seems old, probably a .5-1 bud higher)

Link5, Sold for 4 buds (look at item histories)