I recently got the drink membership at Panera so I can go over in the afternoon, get a drink, and read for a while. But the music is loud and people have meetings there. So I take a pair of these with me. And listen to nothing. It’s pretty nice.
Twenty bucks is pretty typical for a middling-capable and reasonably comfortable hearing protector. If you’ve actually got a use for a questionable-fidelity bluetooth headphone as well, then it’s a reasonable acquisition, and arguably better than the nominally quasi-comparable Aduro set I got in an IRK.