I am always a fan of unique cases, especially if it is executed well and provides more than simple visual benefits. The Cooler Master Masterbox Q500L does achieve that with its perforated side panels, which allow for refreshing flexibility. The design is well executed with the magnetic covers, removable feet, and movable I/O panel as well.
The second element of the chassis is its ability to be used seamlessly as a desktop, which could make it even more interesting for those who want a living room PC. From a chassis design perspective, this works great as well due to the larger, rubber-equipped screws on the solid side panel, as they also function as perfect stand-offs in such a setup. The only tangible downside here is the fact that Cooler Master only included two metal mesh panels, while most users would have loved to make the third side look like the rest of the chassis as well.
Last but not least, the acrylic window may catch some by surprise for a $60 chassis as we have become spoiled by many other more traditional cases offering that mix of materials in a similar price range. In the end, this is just a cosmetic element, and with its unique aspects in mind, I see the price of the chassis as justified.
That said, Cooler Master has done well with the Masterbox Q500L, with its functionality and unique takes and features resulting in a fun and surprisingly capable and compact chassis.