Possible Clues:

• What one has to fork out for a round?
• The cost of a round?
• Putting price on feeding information gratis, not right
• Of course that's what you pay for a round
• That's a coloutful 14 down, of course
• What the round cost?
• Just a shade expensive, of course
• For putting your money on? Of course!
• That's what it costs to get round, of course
• That payment is so colourful for 6 down