Related Clues:

• With 83-Down, flea market's cousin
• Quid pro quo equivalent
• Substitute
• ___ shop
• Cashless transaction
• Carpentry or masonry, e.g.
• Exchange
• Swap players or baseball cards
• Be active on Wall St.
• This for that
• Pull the switch?
• Meet starter
• Do business
• Give and take?
• Type of deal