Synonyms and related words :
cutthroat, exacting, excessive, exorbitant, extortionate, extravagant, fancy, gouging, grossly overpriced, immoderate, inflationary, inordinate, out of bounds, out of sight, outrageous, preposterous, prohibitive, skyrocketing, spiraling, unconscionable, undue, unreasonable, unwarranted, usurious