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On sale for $8.99 + free shipping at amazon right now as I type.
Ships immediately... so why would anyone even bother with this drop?
As a reference, foam earplugs, has a 32 dB attenuation,
and full cup ear muffs has >100dB. These, while they may be a bit more comfortable than foam plugs or ear muffs, are only rated at 20dB which means they are not going to block a lot of noise for you in comparison, it's not going to be enough to use in industrial or at the gun range. I can see people wearing these for music and at concerts though.
Probably people who live outside the US.