The Minoura DS-530 is used by many pro teams for a variety of reasons. It is portable, easy to set up, robust and has a small footprint which works great in tight spaces. It securely holds a bicycle and doubles as a stand in which you can perform light-duty repair work.
On the consumer side of things, it makes for easy bike storage where the rack can be moved around but solid and stable enough to stay put in one area. You can line them up and have multiple bike storage and also makes a great cleaning station stand.
Given the DS-530's quality, durability and versatility it is an extremely relative product for today's cyclist and the price point makes the value hard to deny. This is one of Minoura's best-selling racks and it is easy to see why.