cost a (small) fortuneThis trip cost a fortune.
be daylight robberyUKinformalWhat they're charging to get in is daylight robbery.
be highway robbery$50 for two drinks? That's highway robbery!
be a rip-off£200 for a concert ticket is a total rip-off.
be prohibitively expensiveThe cost of textbooks alone makes schooling prohibitively expensive for many.
be beyond/out of reachThe price of this hotel puts it out of reach for most people.
can not affordI can't afford to go on holiday this year.