Possible Clues:

• What it costs to peek, perhaps
• Just peek, perhaps, at what it'll cost
• What it costs to maintain a peek?
• What it costs to get up and look up at the castle
• Peek there, perhaps, for maintenance
• Not down to look up for maintenance
• Happy Kildare has record household expenses, maybe
• At university, glance back to see maintenance costs
• Repairs and maintenance
• Maintenance of standing defensive tower