The first 2 times the car won't start?

The first 2 times the car won't start happened within like 2 weeks. But, it would turn over after 2nd or 3rd try.

It just died last night. I have enough juice in the batteries that the lights and radio come on. I have tried jumpstarting the car but it won't turn over. I hear a mild clicking noise but I wonder if the starter is gone bad.

If the starter has gone bad, how much can I expect the labor and parts to cost me?

I would really appreciate your input in this.

Thanks.