been routing all my seeds to high level for a few months to see if i can pull one.
this is where I'm at so far:
even then, I probably spent 2-4 times this amount and haven't seen one EX drop. they really need higher rates, cause it's not like they're that overpowered.... Hell, the ability bracelets (later on), the evolved CSQ equipment, and possibly the whale equipment are likely stronger...