I agree, however how else could they charge god knows how much for a $50 hepa filter? its not like its new technology. It doesn't say how long the filter lasts

I agree, however how else could they charge god knows how much for a $50 hepa filter? its not like its new technology. It doesn't say how long the filter lasts, and crucially the failure mode for the filter. (will it bypass when its full? do you get a warning? etc etc etc )