
Extortionate
Negative Feeling
Use 'extortionate' to express your dissatisfaction or disapproval towards very high costs. 
Emphasize Unfairness
Apply 'extortionate' when you believe a price or demand is not just high, but unfairly so. 
Controversial Usage
The term can sometimes seem offensive, so be cautious when using it to avoid insulting someone unintentionally. 