Since each murex yields only a tiny amount of fluid, it has been estimated that it would take nearly 12,000 murices to make one and a half grams of dye.
Kuna iga ogakodalane eritab seda vedelikku väga vähesel määral, on arvestatud, et pooleteist grammi purpurvärvi saamiseks läheb tarvis peaaegu 12 000 ogakodalast.