All said and done, it rings in between $450-and $600 right now mostly because of the exchange sucking. I had a hell of a time getting the LED panels to work with the controller because the documentation for everything was pretty much non-existent, but beyond that there isn't much to it. The hardest part is sourcing someone to lazer cut all the acrylic for the frame and then find all of the correct hex spacers and screws / nuts to assemble it all. I think it took me over a week to source all the bits and pieces, and once I had everthing took me a couple hours to build it up. You also need to be comfortable updating the SD card, which will take some computer know-how as it's not just drag and drop or cut and paste.
Where this isn't a kit you can buy off the shelf anywhere, I would rate this as a 7.5/10 as sourcing all of the *correct* bits proved to be a pain even for me... and then getting the SD card loaded up with the latest software.
D