Can also be priced well?

I can not say, except that I can not detect any Unerschied to (higher-priced) filters of other providers about the optical quality of the filter. The filter glasses are clear, distortion-free and appear to be remunerated quality, ie it no longer occur unerwünwchte reflections on, ale with other filters (genauers could scih probably only in the laboratory measure). The version strengths lie within the normal range, but are slightly thicker than most thin "slimline" filters. At 15mm focal length (APSC) occur no vignetting at the image corners. It is nice that the filter set is supplied with a well-padded folding bag, including a microfibre cloth. This is much better than the usual hard plastic cans, in which filter otherwise be normalerwise geliefer.
Negative IT Me iesen filters so far noticed nothing.