If you are considering placing an order for twenty units from our trash can factory, I would like to offer a detailed response to your query about volume discounts and free shipping. Yes, we do provide a tiered volume discount structure for orders of twenty or more units. Specifically, for an order of twenty units, you qualify for a 10% discount off the standard wholesale price. This discount increases as the order quantity grows—for example, orders of fifty units receive a 15% discount, and orders of one hundred units or more can receive up to 20% off. Regarding free shipping, we offer complimentary ground shipping within the continental United States for any order totaling $500 or more. Since twenty of our standard 32-gallon trash cans typically cost approximately $480 before discount, your order would come very close to qualifying. By applying the 10% volume discount, the total would drop to around $432, but we can work with you to add a small accessory or upsize your order to reach the $500 threshold, thereby unlocking free shipping. For international orders, shipping costs depend on destination and weight, but we can offer a reduced freight rate for bulk purchases. Ultimately, our goal is to make bulk ordering cost-effective, so please contact our sales team directly to discuss the best combination of discount and shipping terms tailored to your location and specific product selection.