a lot of money.

Her hair ought to look good - she spends a small fortune on it.

• in prime
• in principle
• in print
• in progress
• in question
• inquire into
• inquire into something
• in reality
• in reduced circumstances
• in reference to
• in reference to something
• in relation to
• in relation to something
• in reserve
• in retrospect
• in return
• in return for
• in return for something
• in right mind
• in safe hands
• ins and outs
• ins and outs of
• ins and outs of something
• in season
• in shadow