The price of collagen varies as the manufacturing method and
cost are different depending on the form of collagen. The most expensive collagens
are the molecules and the fibrils composed of molecules. Highly purified
collagen molecules for cell culture are worth approximately 150,000 yen per
gram. More than four grams of collagen can be obtained from the swim bladder of sturgeon (2 kg), which is worth over 600,000 yen. This is approximately
the same value as caviar from a female (20 kg).
(The price of caviar varies depending on the quality, but it is
calculated at 300 yen per gram, which is a medium quality caviar).
