It came out as the cheapest option for 12+ slots cases. You can compare here: https://geizhals.de/?cat=gehatx&xf=14070_12&sort=p#productlist (only if you’re German or at least in Europe), don’t know about price comparison sites in other parts of the world with as many filter options.
https://aerocool.io/product/cipher/
12 slots and costs 90€ (in Germany)
It came out as the cheapest option for 12+ slots cases. You can compare here: https://geizhals.de/?cat=gehatx&xf=14070_12&sort=p#productlist (only if you’re German or at least in Europe), don’t know about price comparison sites in other parts of the world with as many filter options.