set someone back

to cost (when the thing bought was expensive)

Example Sentences:

His new car set him back over 70 000 dollars.

A: How much is that Ferrari?
B: It will set you back $150,000.

Media and Links:

How much will it set me back to be a bridesmaid?

Similar idioms:

1. set the record straight
2. dead set against something
3. set foot