This is also priced selling for $48 at Harvey Norman currently:
— https://www.harveynorman.com.au/sennheiser-soundprotex.html
ABOUT
The ultimate hearing protector: A two-stage filter system reduces high and low frequencies while maintaining clarity and fidelity, allowing you to enjoy live shows without losing ambient awareness
Safe listening that sounds great: Our advanced earplugs with a mid acoustic filter and a full noise blocker safeguard your ears from high decibel sounds, protecting them from permanent damage
Multi-purpose: Choose from 4 different filter strengths to find the perfect level of protection for travelling, going to festivals or concerts, studying, relaxing, reading, sleeping, or even swimming
Comfortable and reusable: 3 different tip sizes shaped to fit the ear canal and avoid irritating the area are included. Made from a soft medical-grade TPE, they are also washable and water-resistant
Anytime, anywhere: Safely store and protect the plugs in their convenient travel pouch which keeps them clean and ready to use when on-the-go
Personally, I use the Etymotic ER-20XS ones but this is not a bad price, if you're looking for the Sennheiser brand with replaceable filters.