the dimensions are slightly wider than the standard recommended 4x2x2 so that of course is a plus. but unless you live close or they offer free shipping you would be better off going over to petco or a lfs to get the tank. here it is priced at petco online, just the tank. black finish 4x2x2. http://aquariums.petco.com/tc/index.php?action=confirm
if you live close or they offer free shipping it might be worth getting. it only has a front viewing window from what it looks like but as long as you wouldnt mind that long term it will be worth getting.
i like seeing everything in the tank from as many angles as possible. it allows you to see dead spots, which if you have just a viewing window like the link you posted it might allow stuff to get stuck along the front against the wall. which you might not see. its all about how you want to go about circulation at that point. to me its not something i would get because of the color unless it goes with things that surround it and wont look out of place. plus the lack of viewing unless your looking from above and the lines that run around it for "looks"