Review (4/5): Extra value, filter and re-use.
I got some of this stuff with my new Norelco system, and I'd say it's probably worth using it -- the shave quality feels good after a cleaning, although I wouldn't bother with the "monthly" replacement directions. I'm just putting my dirty fluid through a coffee filter for re-use. There's pretty much no reason to just toss the liquid out unless you really enjoy buying this stuff. At some point I'll probably need more of it, but a little bit of solution could last very long.