I looked up in ebay for LED panels and this is one of the results. They have a great amount of just basic LED light panels for a considerable amount less but this one had the same type of ability as the project you had posted.
**broken link removed**
Wow, this is really big.. but economically ineficient (i think). A 40" plazma or LCD monitor is a little cheaper (i know) and it could be driven from an old PC collecting dust in the garage or attic and with all bells and whistles of colour, sound and images. Maybe even a HD Tv tuner connected to another input would provide some excitment (when one is bored looking at the monotext for the same price)