Assuming that's the case, there would have to be 640 cases with rubies and 320 cases with emeralds. A total of 960 cases produced. If I remember correctly from last year there were 560 cases released with the rest of the product going to newsagents, starter packs etc. I would expect rubies 1 per case and ruby/emerald 1:2 cases. I just can't see 960 cases being produced.I am assuming that you wont get a ruby and sapphire mojo in the same case, hence the /40 & /20 i.e. 3 case break up would be - 2 cases will have /40 and 1 case will have /20 could be wrong tho