Is it possible to use and modify (with permission) someone else's Prezi?

I saw a reallllly good Prezi by David Oliviera on 'unboxing' (ideas and thinking outside the box). It's at http://prezi.com/x1oi8ioeerty/unboxing/.

I'd like to use it myself. While not completely specific to my area, a lot could be used and I'd have a super presentation.

I'm more of a 'cut and paster' than an original creative type. Actually I'm a management exec with not enough time!

Is there any way to contact authors who post, seek their permission to access their creation and then do so? If so, how?

Or maybe there's an opportunity to create a Prezi marketplace?