You can buy one from HERE

Because this is such a rare 'looking' skirt i decided to look for similar items with the pattern.
The most similar dress i found is this Motel Rocks Zoe Dress in Night Time City Print HERE from ASOS for $49 or HERE from Motel for $54
 or another similar is this Motel Rocks Zena Dress HERE from Singer22 for $60
Some Similar maxi skirts are:
1. Navy Straight skirt HERE for $27.95 from Witchery
2. Cobalt maxi Skirt HERE from The Iconic for $199
3. Side Pleated buttoned skirt HERE for $105
4. Blue Split low hem skirt HERE from ASOS for $41