Can anyone help me with amazon ppc?

as you know the condition of the amazon.in. i have few question for amazon ppc expert.

1) how actually amazon ppc help organic sales?

2) how to masure in numbers that if your amazon ppc campaign helping you in getting organic sales or not

3) is there anyway to know how much order i need a day to get ranking at 1st postion.?

4) how do you decide if you should go with keyword or not. what help you to decide right keyword right big and right budget?

5) as per your experience on amazon in your catagory, approximately to earn Rs.100 a day organically, how much order we need to spand