The two new compact cases from Sharkoon come with stylish looks, optimal airflow, and plenty of space to accommodate tall CPU coolers and long video cards, as well as additional coolers. For both the SK3 and TK4, the manufacturer's suggested prices do not exceed the 50 Euros (roughly US$59) barrier.
https://www.notebookcheck.net/Sharkoon-unveils-two-more-RGB-compact-ATX-cases-namely-the-SK3-and-TK4.505898.0.html