A polycrystalline solar panel rated at 80W typically costs between $100 and $250, depending on various factors such as brand, efficiency, and warranty. . Check each product page for other buying options. Performance and Longevity: Higher quality panels may have slightly elevated costs but offer greater durability and enhanced efficiency over. . This guide explores the key types of 80W solar panels, with a focus on polycrystalline variants, to help you make an informed decision based on efficiency, cost, durability, and application. Thanks to its optimum size, it is easy to handle and specifically designed for large scale off grid applications. We offer air or sea shipping from China with multiple payment methods to suit your business needs.