Sand Dune skins are a CS:GO skin family whose members have been spray-painted with colors that fit the desert theme. Currently, there are five skins who are members of this family, however, due to them being added to the game at various points in time, they can be obtained from a wide variety of cases. Sand Dune Skins can come in all five exteriors and the majority of the skins in this family have their own souvenir versions.
Sand Dune skins are not very valuable, with the prices ranging from a few cents up to a hundred dollars depending on the skin and its exterior.
Check out other CS:GO skins families: