WordPress Whiz to Implement a Premium Content Section on My Site and Other Changes...

General information for the website: A site devoted to exploring Amish cooking and culture
Kind of development: Customization of existing website
Description of requirements/features: Right now my site has heavy traffic and all content is free. I want to quickly create a "premium content" section for paying site visitors. My budget is not large in the beginning, so it'll need to be pretty bare bones in the beginning but we can add more bells and whistles as time goes by and revenue grows.
Payment methods: Credit Card, Paypal
Extra notes: General information for the website: One of the top websites exploring Amish culture
Kind of development: Customization of existing website
Description of requirements/features: I have a heavily trafficked website that offers all free content. I want to create a premium content section to the site for paid subscribers. I do not have a huge budget to begin with so the premium content section will have to be very bare bones, simple to use and we can add more bells and whistles as the budget grows.
Payment methods: Paypal
Extra notes: