costliness  
noun [ U ] uk/ˈkɒst.li.nəs/ us/ˈkɑːst.li.nəs/
  (HIGH PRICE)      
 昂贵
the fact of being expensive or too expensive
  The hotel is very popular, despite its costliness. 尽管价格昂贵,这家旅馆还是很受欢迎。 
 People still use this credit without realizing its costliness. 人们仍然在使用这种信贷方式,却没有意识到它成本高昂。 
 - More examples
 - Despite the costliness of this best rated vacuum cleaner, it still catches the attention of consumers.
 - The costliness of deportation is enormous and the results it obtains doubtful.
 - London, Rome or Paris were extremely expensive - with all the allure and social cachet that costliness implies.
 
See: costly