The Cougar QBX is surprisingly affordable, clocking in at less than 60 US dollars, all while still offering you everything you could be looking for inside a compact Mini-ITX chassis. You can install both GPUs of up to 350 mm in length and a CPU cooler of 105 mm in height.
Cougar managed to include every feature you would usually find in a compact tower chassis: multiple fan locations, liquid-cooling compatibility, a possibility to install an ODD bay, and the flexibility for high-end hardware, with the ability to cool it as well. That said, it is not quite as refined as the aluminum NCASE M1, but only costs a third of the price. At that price point, the QBX is a really awesome chassis with an unbelievably low price tag. So, if you are looking for a Mini-ITX chassis for gaming or a hybrid HTPC system, you will not find anything better at its price point or beyond.