I have seen these tanks in Vebas for sale aswell. They look pretty good.
Rivereef also have some of these smaller style nano tanks too.
They actually have a display one on thier counter, it looked really really good, until I bought majority of their corals in it for my tank. haha. Even still with the few corals left in it, it is really aesthetically appealing. I tend to stare at the nano tank more than their 6x2x3 display tank (might be bigger) they have just started, not saying that the big display isnt good, but it amazes me how u can keep such beauty in such confined spaces. I recommend going in and checking it out. Dave is also really knowledgable when it comes to marine tanks too. Loves a chat aswell.lol. The reason he did a nano display was to prove to customers that such a system can be maintained...
Hope u like doing water changes, cause the nano's need them daily...lol.