The rate is one shiny in 2 boxes. I think Mudkip's math is a little off.I thought the ratio was 1 shiny every 2 boxes, or did something change?
Still, that would mean there is 1 Rayquaza per 8 boxes on average. That's still a lot.
Lots, and lots, and LOTS of booster boxes will be opened.What I don't get is how T&T expects to get all of these Rayquazas...