One in every box? I probably bought a whole boxes worth of loose for no major hit. best i got was 2 m&a
I hated the empty packs, they're a waste of money. At least the golds held some value, especially Souths ones (sadly i was only lucky enough to pull 1).
I think you were probably a victim of searched boxes. It seems that the signatures were more often than not located at the bottom of a box. I personally pulled most of signatures from very random places in the boxes I bought from but the general theory was that the boxes were quite 'searchable'.