To do him wanton rites, which cost them woe.
Milton.
To cost dear, to require or occasion a large outlay of money, or much labor, self-denial, suffering, etc.
Cost, n. [OF. cost, F. coűt. See Cost, v. t. ] 1. The amount paid, charged, or engaged to be paid, for anything bought or taken in barter; charge; expense; hence, whatever, as labor, self-denial, suffering, etc., is requisite to secure benefit.
One day shall crown the alliance on 't so please you,
Here at my house, and at my proper cost.
Shak.
At less cost of life than is often expended in a skirmish, [Charles V.] saved Europe from invasion.
Prescott.