Do we know the mechanics for this event yet? seems like both eggs have same pets but expensive egg has better odds on rare pets.
It seems to me the halloween coins have the same random chance at each tier, are unaffected by pet coin stat, and larger items generally have higher total coin output, but that time to open is more useful for gathering coins. So, seems like large size coins are the best way to go (and not chests because of time to open). Any one no for sure, or have different anecdotal evidence?