I remember reading a blog a few years ago, where the blogger said to not even bother sending less than (I think) 5~8 bucks (in BRL). He said that after all fees

I remember reading a blog a few years ago, where the blogger said to not even bother sending less than (I think) 5~8 bucks (in BRL). He said that after all fees and everything, he would receive too little to make a difference, and the person donating would be basically wasting money