steep

(adjective) costs a lot of money, is very expensive

Example Sentence:

The man’s new sports car is really steep.

A: Do you want to go to that new restaurant?
B: No
A: Why not?
B: Because everything there is so steep. It’s too expensive for me.

The young woman’s gambling addiction was steep, so she decided to get help.

From the Blogs:

Education Secretary Criticizes Steep Rise in College Costs

Media:

Similar idioms:

1. cost an arm and a leg
2. pricey
3. show off
4. pile
5. face facts