I creating a Directory using the K2 component. Is there a Paid Listing and featured module/plugin like Sobi and Jreviews for K2 ? Users can submit listings for free, but pay a premium for top listings based on : impressions, clicks or time period.
1- In sobi : www.sigsiu.net/download/plugins/featured_listings.html
2- Jreviews : www.reviewsforjoomla.com/jreviews/paidlistings 

:-(