now that you put it like that, $50 does seem a tad pricey 
but then you have to remember that it’s not like a regular mop, a stick with a sponge attached to the bottom. it’s almost like an electronic gadget, and needs electricty to run. hence the price.
and that’s another great thing about the H20 mop is that it doesn’t require any chemicals at all. all you need is water to clean the floors. no floor cleaner required, hence no chemicals that you have to inhale or the lingering smell. although i love the smell of pine 