I paid about $250 for mine (made by Starkey), this included both 10db and 17db plugs. They work a lot better than the high fidelity earplugs I've tried off of

I paid about $250 for mine (made by Starkey), this included both 10db and 17db plugs. They work a lot better than the high fidelity earplugs I've tried off of Amazon. Starkey apparently retains a 3d scan of your ear canal and can make new sets if/when you lose them.