"16 Sample interception rates for commonly used Russian missiles in 2024: 50% for the older Kalibr subsonic cruise missiles, 22% for modern subsonic cruise missiles (e.g. Kh-69), 4% for modern ballistic missiles (e.g. Iskander-M), 0.6% for S-300/400 supersonic long-range SAM, and 0.55% for the Kh-22 supersonic anti-ship missile. Data on interception rates of hypersonic missiles is scarce: Ukraine claims a 25% interception rate for hypersonic Kinzhal and Zircon missiles, but Ukrainian sources also indicate such interceptions require salvo firing all 32 launchers in a US-style Patriot battery to have any chance to shoot down a single hypersonic missile"
If they really have to fire 32 launchers to stop a single hypersonic missile that is an insane amount of missiles and money spent just to stop 1 missile.
25th page of this report, which is really interesting in general.