A document from 1828 on grain prices per starling has been preserved (one star corresponds to about half a schett). Comparing these prices, one arrives at similar ratios as with the schett: A star of barley cost 1 guilder 24, a star of wheat 2 guilders 12, i.e. 1.7 times as much. Only the oats seem to have become considerably cheaper.
Today, the differences are no longer so large and prices are determined by the world market.