I have a classifieds website and to fight spammers i want to allow only paid members to register or signup on my site. So, i want to create a signup form or page where users can ONLY signup if they pay they specified amount. So, basically i want to know How to create a custom signup paid subscription form for the users who want to register and post ads on my site.
Please tell me if there is such a plugin available on WPmudev and if so, then what things i would be needing?
The site is built on Wordpress