Possible Clues:

• Shy cats are all for sale, by the sound of it
• Cathy's having a sale, by the sound of it
• Expensive cruising vessels
• By the sound of it, they're all for sale
• It sounds as if they're for sale
• Millionaires' 'toys'
• Don't go back around the top of the church for a sail
• Sand or sea vessels
• Sounds as if they're all for sale
• Craft for 6 dn