Referal amount not fair

Helo admin,i want to say that,this month's ref contest are not satisfactory as the 1st will get 100 $ and 2nd get 50 $.half amount of the 2nd winner as compared to 1st which is not fair and the 3rd get only 30 $.and 4rth ,5th also gets equal which is also not fair.

I must suggest prizes would be like this ->
1st - $ 80
2nd - $ 60
3rd - $ 40
4rth - $ 25
5th - $ 15

i hope you will implement this next month.

By the way,how much you are going to giveaway in january contest.