In the us, where land is plentiful,

Answer carbon dioxide ice;

Lol why dont you actually do the work instead of have people do it for you. jk i do it too lol

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.