prohibitive
adjective uk/prəˈhɪb.ɪ.tɪv/ us/proʊˈhɪb.ə.t̬ɪv/
（费用）高得负担不起的，（价格等）使人望而却步的
If the cost of something is prohibitive, it is too expensive for most people.
Hotel prices in the major cities are high but not prohibitive. 大城市里的旅馆费用昂贵，但还能负担得起。