https://www.amazon.co.uk/Dune-W-stenplanet-3d-Bluray-Blu-ray-allemand/dp/B00DU76ZTK/ref=oosr
The Amazon customer reviews of the actual transfer are not good either… the film itself is of course a masterpiece, as all right thinking people agree.
EDIT: I just noticed that the renowned Shakespearean actor “Patrick Steward” is in this version!