£55 at time of review CPL, ND8, ND16, ND32, ND64, ND256I got a DJI Osmo Action 6 a couple of months ago and looking forward to using it snowboarding next month, so ND’s will be essential to cut down the light levels. I’ve given these a quick test, but as the weather is so gloomy here currently my tests have been rather limited, as it’s not been bright enough for me to test anything above ND32 (as that’s 5 stops already), so I’ve tested the others.To CPL works well, and a bit of pop to the image overall and of course cuts out reflections on water and windows, although as soon as you tilt the camera the flections can reappear. The 8 & 16 ND’s worked well cutting down the light levels to keep my shutter speed down, there’s a tiny colour cast, but it’s really small, but noticeable if you’re really pixel peeping or colour correcting in post etc, but if you’re that particular, then you already know how to over come it)Swapping the filters over is simple too as your simply pop them over the top of the lens (you can’t stack these filters), comes with a good case too. All in all great set of filtersHope my review was helpful