As a unit of measurement for harvested children, a railcar is called a railcar for historical reasons. The other unit of measurement, of course, is grade. For grade “A” children – that is, your children of indebted or disgraced public figures – you’re talking about 100 kids/railcar on most dark web markets.

You can get more if you settle for lower grades, say if you’re using them for research or food as opposed to labour or ritual.