Related Clues:

• Word with ''birth'' or ''interest''
• Cut-___ (cheap)
• Per-unit charge
• Stack up
• Make a top ten list, e.g.
• Utility bill datum
• Timely charge
• Fixed fee
• Be something special
• Give a "G" or "PG," say
• See 6 Down
• Assign an NC-17, say
• Number of prime interest
• Deserve special perks, say
• Interest charge