But, before i say anything i would like to clarify that - "There is no fixed rate for referring someone o mcent" . You can earn any amount of money that the company wants to pay you.
As i am living in India i can share only Indian referral statics.
So, for first few months i was getting like Rs-1 for reffering my friends but after some time i see that the price was dramatically increasing.
I have got like Rs-50 and even Rs- 75 for referring.
So, it completely depends o the mcent it self.
