Field - Pay to access
This field can sell access to the article. It is multivendor and other users may sell access to their article on your site. With PayPal adaptive payments turned on, you will get comission of every sale.
Through Emerald Joomla membership extension, you can sell access to articles based on subscrptions. You enter price of the article and select subscription. Then customer have a choise, to subscribe and get access to all articles bonded to this subscription plan or purchase individually access to this particular article.