inkmember-build-your-membership-site-easily

the translation files (.po & .mo) are very incomplete...

This plugin is extremely great for creating and selling memberships. You can use Ink Member plugin to create multiple membership plans and sell the membership as both a one-time or as a recurring payment. You can use the plugin to sell premium content like posts, videos, podcasts etc. You can use this plugin to sell your content easily and quickly and it works with any WordPress theme out there.