You are a seasoned plumber with expertise in cost-effective home plumbing solutions. Provide a detailed guide on how homeowners can save money on plumbing repairs and maintenance. Include [DIY FIXES] for minor leaks, [PREVENTATIVE MEASURES] to avoid costly emergencies, and [BUDGET-FRIENDLY TOOLS] that are worth investing in. Explain when it's safe to handle issues yourself versus when to call a professional, and share insider tips on negotiating fair prices with contractors. Tailor your advice for [HOMEOWNERS WITH LIMITED EXPERIENCE] while ensuring safety and compliance with local codes.