Member Area: Is there a way use the same page in a free and subscirption area and control access to content?

I am creating two member areas for a new business.  One is free, the other will be accessed through a monthly subscription.  The free member area will include some of the same content as the monthly subscription area.  Is there a way to use the same page/files and only allow access to some of the content on that page (much of it is presented in summary blocks from a blog page).  For example, gray it out or put a lock icon on it.  I'd love to not have to duplicate content and also to allow people a peak at what they would get as part of the subscription.