The Thermaltake Commander MS-I chassis is the perfect example of how small things in cases could make all the difference. If you look at the USB 2.0 version, then the market offers many other enclosures from various manufacturers which tend to offer the same or better level of quality and at least an identical feature set at the same price point. One such example is the AeroCool XWarrior Red Devil Edition which offers a red interior, cool looks and more fans for example. In such a scenario, the Commander MS-I USB 2.0 will not be the first choice of the vast majority and some may end up spending a few Euro or Dollars more to get more bang for their buck.
Now let us add the Commander MS-I with USB 3.0 to the mix. Suddenly the pool of comparable cases with USB 3.0 at this price point shrinks down to a handful and the Commander MS-I USB 3.0 leads the pack in terms of price. So the result should be obvious: with cases in this price class, looks and a basic compatibility with the hardware are the two most important aspects, add the requirement of USB 3.0 and the Commander MS-I is a solid and most affordable choice. If all you need is a USB 2.0 equipped chassis, then you should take a good hard look at what else there is out there - unless you fell for the design of Commander MS-I USB 2.0.