Well with NHL Lockouts.. gotta take what you can get.. personally I thought it was pretty epic, that's a next generation brawler for sure.
No Adam, just a random video I found.
Each license is good for one public site along with one private password protected site to use for testing, developing etc. vB and all other commercial forum softwares also have this same policy. Ofc, you can point as many domains as you wish to your one install.
There is a paid add-on called simple gallery. It's developer crowd funded a more advanced gallery version to be released at no current eta that I'm aware of. As far as "sales pages" goes. You can use xF Pages - http://xenforo.com/community/pages/example-page/ or you could do something like...
Yes, there is a paid add-on for blogs. http://xenforo.com/community/resources/better-blogs.1055/ Honestly, pretty much anything you can do with vB can also be done with xF. Most of the xF community is made up of ex-vB users and the developers are ex-vB lead developers.