I'll take a stab at it..... 1120 MoJo Sets in the release and around 6500 Boxes. So while it's unfortunate you haven't hit one yet, they're around 1:6 Boxes across the release so 2 Boxes busted is probably a little early to be surprised.
Likewise, 960 MoJo Sets last year, 6300 Boxes.
New Zealand also has a dealer that purchases from the same dealer stock as everyone else.
Has it been confirmed anywhere that newsagent stock doesn't have 1/1 or emeralds or is this just a rumour.