They cost:

Water (35 L) + Carbon (20 kg) + Ammonia (4 L) + Lime (1.5 kg) + Phosphorous (800 g) + Salt (250 g) + Saltpeter (100 g) + Sulfur (80 g) + Fluorine (7.5 g) + Iron (5 g) + Silicon (3 g) + 15 other elements in trace amounts

Oh and don’t forget the taxes:

One arm + One leg + One little brother