How to import Custom Post Types of wordpress into Drupal? I've a wordpress site with around 500+ posts of a Custom Post Type with some custom fields attached to them.

I want to migrate them to Drupal. I've tried using wordpress_migrate. But it doesn't seem to work! This module didn't even seem to recognize the Custom Post Types. How can I import them?
This isn't currently available in wordpress_migrate however there is a feature request open here. https://drupal.org/node/1580412

Your best option would be to write a custom migration using Drupal's migrate module. You would need to write a custom source to load your data from WordPress and you'd be able to look at wordpress_migrate for help as needed.