ADJ-GRADED (费用)高得令很多人负担不起的,贵得让人望而却步的 If the cost of something is prohibitive, it is so high that many people cannot afford it. (费用)高得令很多人负担不起的,贵得让人望而却步的 [formal]
The cost of private treatment can be prohibitive.
自费治疗的费用高得让人望而却步。
...the prohibitive prices charged for seats at the opera.