[bojan]

I found couple of ads on Alibaba for UVIR-CUT filters at very attractive prices (10 - 50 US$ .... bargain compared to Astronomik or Baader Planetarium prices), performance on ads looks good, but the overall presentation on Alibaba website somehow doesn't fill me with confidence, I have a feeling that both sellers and buyers do not know exactly what is going on and what will be received at the end of the day... especially after (bad?) experience with seller on ebay where last year I bought Rocolax filter with advertised transmission BW to be 400-700nm, but actually it turned out to be ~ 400-640nm - good for general photography, but not suitable for AP.
(I am sure somebody in the supply chain made a mistake or did not check properly)

Does anybody have some advice or comments?