Imalurnin, have you ever seen a carrot seed? They're about the size of the period on your screen...( . ) ...that big. They're REALLY hard to plant, usually sold pelletized or on tape. I can't imagine how enough seeds are even gathered to make oil...I'm not surprised that they're so pricey.. :)
BTW, thanks for the links below. That has been a question of mine for a while, about absorbtion, so I will explore later.