extortionate

adjective2

1. •
   Of, related to, or typifying extortion (“the practice of obtaining money or other property by the use of force or threats”).

   • The moneylenders – sometimes so extortionate that people pledged their slaves and sacred relics – were Uighurs from the west. — 2006
2. •
   Greatly exceeding what is moderate or reasonable; exorbitant.

   • […] I have the satisfaction to think you are in good hands; M. Miret will not be extortionate: the first year's rent you already have in your savings; afterwards Miss Lucy must trust God, and herself. — 1853