I think it was said somewhere in the manga that Devil Fruits were like really rare. But what im getting to is that about everyone on the grandline has a pirate with a devil fruit power.
There's like 6 in BBQ works.
probably all the other members of his group
probably most of the shickibukai
The guy who could eat anything
Also probably alot of the pirates in Shanks crew have devil fruit powers.
So those are the only ones we have seen so far, and they have been on the grandline for about only 7 months.
So really how rare are the devil fruits? I mean for a would be pirate group (the ex-king dude) to have a devil fruit and only have been a pirate for a couple months.