Used cars for sale Sitemap Oklahoma Duncan, OK Buick Buick Sitemap in Duncan, OK Used Buick in Duncan, OK by Model Used Buick Enclave Used Buick Envista Used 2026 Buick Envista Used Buick in Duncan, OK by Price Under 50,000 Under 55,000 Under 60,000 Under 65,000 Under 70,000 Under 75,000 Under 80,000 Under 85,000 Under 90,000 Under 95,000 Under 100,000 Used Buick in Duncan, OK by Style SUVs