Premium shower-filter ownership commonly lands around $100–$200+ per year depending on cartridge price and replacement interval. Compare annualized cost, not just the showerhead price.
Jolie example
Jolie currently lists its filtered showerhead around $169 one-time, with subscription options lower. Replacement filters are sold on recurring schedules, making cartridge cost a major part of ownership.
Weddell example
Weddell sells the Duo and bundles around the low-$100 range. Its replacement-cartridge economics should be compared on annualized cost and rated capacity.
What changes the annual cost
Short replacement intervals, hard/chlorinated water and multi-shower households increase cartridge spending.
Cost vs whole-house treatment
A shower filter can be far cheaper than a whole-house system when the treatment goal is only shower chlorine.