yup, part of this site will include a marketplace of themes, blocks, and applications. Many of them will be free, some will cost something. All of that is coming together as I type, and as this very active developer community is building stuff they need anyway.. check back in a couple of weeks for it.

any update on status? I'm sorry to bother but I'm loving the functionality so far.

The marketplace is part of the big push we're doing before the end of the year. We're going to have this site buffed out with a themes/apps/blocks marketplace that everyone can sell their own wares on. We're also going to put some hooks into c5 so its easier for site owners to browse and buy. All of this will launch around the holiday season...

What would really help in the meantime is if you could take your custom block needs over here:
http://www.concrete5.org/community/forums/block_requests...

I'd like to see people making requests for blocks they need and developers building stuff out over there. Nothing would suck worse than opening a store with nothing on the shelves.