The West is in complete denial that the Houthi movement is one of the most battle hardened and effective factions against US style war tactics in the World. Their ability to procure, build, and strategize and their experience fighting US tactics in sea and air they're punching heavily above their weight limit. It's seriously impressive.
Part of this denial is the heavy investment in the military industrial complex which has effectively destroyed war economics from the US point of view, but nobody wants to admit that it's more expensive field an $11M Aegis launched SM-3 vs the Quds-3/Quds-2. While the Quds-3/Quds-2 has no public dollar amount that I can find, it's unlikely to cost more than a Iranian produced Zolfaghar or Qadr missile which western analysis peg at $0.5 to $1.5 million dollars.
Oh and you launch multiple interceptors per ballistic target if you want to intercept, so the economic comparison is for perfect interception with no backup.
The US likely loses more money by having war ships in target range of the Houthis than the Houthis spend yearly on their weapons production.