That light is the 2' Hydrofarm Jumpstart with a 24-watt 6500K HO T5 lamp and it's super economical. I got it for just around thirty-five bucks. They don't have it as a regular catalog item, but the Paradigm Gardens store can special order it. It is important to ask for the T5 lamp kit only. They also sell it as a "Grow Light System", but that includes a metal stand and it is more like $60 I think.
I made a blog post a while back about a (also cheap) way to hang up that light...
An Economical T5 Striplight for a Planted Riparium
I made a blog post a while back about a (also cheap) way to hang up that light...
An Economical T5 Striplight for a Planted Riparium