Related Clues:

• About half of binary code
• Some legal tender
• ATM's lack
• It's tender
• 'A Boy Named Sue' singer
• Disastrous marks for a gymnast
• Some treasury notes
• Billfold filler
• Low bills
• Word after ready or petty
• Rightmost column
• Checkout clerk's question
• Means of payment
• Singletons
• Redeem, with “in”