UK requires them. NZ requires them. They're only expensive here because they are an NFA item. Suppressors are not $100-200 minimum, try like $600-800 and up. The tax stamp was bullshit, but the reality is that they help with the noise, but you still need to wear earpro.
So for protection of your hearing and others, it absolutely is a necessary thing that should be off the shelf available for cheap, and not 6 months of waiting and $200 + having to set up a trust, so you don't become a felon by some random reason that's the NFA as a whole.