Yeah, the premium is usually quite high. I used to have a corsair aio with (2) nf f12s and ML120s as case fans but then got a reference 1080ti so I went custom. I have a 240 & 360 mm radiators with ML120s, that is all I could fit. It is a sound deadening case so the airflow is not so hot. I just use set RPM, 750 rpm for essentially silent and then 1250 or 1500 rpm for games. Kind of loud then but it is fighting the case. Want to clean up loop and replace case with this case (https://www.memoryexpress.com/Products/MX77040) where you can pull off the panels to provide more airflow.