Proximity Plumbing now offers our No-Interest-Ever payment plans. Join the growing group of smart Australians who choose the Open Pay Payment Plan to buy what they need, with no interest ever. The Proximity Plumbing Payment Plan enables you to get your drain work done today, then pay off the account with low regular repayments. All it takes is a 10% deposit to get you started, then the repayments are simply direct debited from your nominated account regular, with NO INTEREST.