what is the least expensive way to ship

what is the least expensive way to ship depends on the size, weight, distance, and urgency of your package. For small, lightweight items under 16 ounces, USPS First-Class Mail is typically the cheapest. For heavier packages, USPS Priority Flat Rate boxes or UPS Ground may be more cost-effective. Comparing rates across carriers using tools like Pirate Ship or ShipStation can help save money. Businesses often negotiate bulk discounts or use 3PL services for better rates. Choosing slower delivery options also helps lower costs when urgency is not a concern.