$500 USD in materials and requires no special tools for an endless supply of water, even in desert environments. US and many other country codes do not recognize this, so it illegal in some countries even though it is widely used elsewhere. Personally I would call it a sculpture that has a maintenance requirement of removing water.
I Tried Desert Moisture Farming with A Fog Net... "Free Water Forever" in real life...another liberal BS dream,. However, where there is fog.... Nets Turn Fog Into Drinking Water - Moisture Harvesting Cloud Catchers