If you meet the minimum hours/years of industrial experience set, you can apply for exam eligibility. The minimum requirement varies from on certification to another However, please note that you need to submit evidence that states that you met or exceeded the experience requirement. You also need to provide IIB with the contact details of your current or previous supervisor for verification purposes.
$100. Payment should be done through EC-Council Store http://store.eccouncil.org
Please visit the eligibility section of the certification.