When using a Theme Blvd theme, this plugin gives you slick interface to build custom layouts.
Like all Jason's themes, his excellent Jumpstart and all of his plugins, this too is a very well coded and sophisticated tool.
This just adds another level of GREATNESS to the Theme Blvd themes and gives better page control/layout. This gives me the ability to look like BIG websites when it is just me. :)
I just recently purchased the Jump Start framework and have been messing around with it to see how it compares to other frameworks I've used. This is a great tool to build some custom page layouts and adds flexibility. A lot of premium themes I've seen use shortcodes to create unique page layouts which works but this is a much better way of handling content structure.
The one thing I would like to see is a visual editor toolbar with the text area option. It is not a huge issue because you could just set it up as a floating widget area and use the Black Studio TinyMCE Widget plugin but it would be nice to have on the page itself.
In the installation the author should mention that this builder is dependent on certain premium themes.