[alfbolide]

Works of art can have a monetary value - there is something called art market. The value is determined by how much buyers are willing to pay as well as how much the sellers are willing to sell. The monetary value of a copy of this low resolution jpeg file can only be determined by the market value. You can't use replacement value to charge theft, because when someone "steal" it from the internet, they always copy it, you don't lose your origin one and thus no replacement is needed.