See disclosure at. In this video I show you how I ship on my own through for mercari! Press question mark to learn the rest of the keyboard shortcuts, https://faq.usps.com/s/article/Return-to-Sender-Mail. With that logic, Mercari should get the bill if theres postage due. Mercari's spokesperson Brad Williams said its most popular one-pound shipping label is not increasing this year - "It's still $4.99, the lowest in the industry," he told EcommerceBytes. But Ive also heard buyers got postage due with Mercari label. Nonstandard fees include: Effective April 3, 2022, USPS will apply a fee of $1.50 to packages with incorrect or missing dimensions (length, width, height) that also have a length greater than 22 inches or volume greater than one cubic foot. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. All you need to do is take a picture of the overdue postage charge and the receipt of your transaction (you can screenshot it) and send it to Mercari. USPS will not scan it unless you pay the difference. Oversized packages or packages with incorrect dimensions may be subject to additional postage fees with the carrier. So be cautious and double check the item upon delivery. Sellers are responsible for all fees associated with incorrect drop-off or overweight packages which will be deducted from the sellers earnings. All fees associated with incorrect drop off, package oversize or weight is the responsibility of the Seller. Sellers are responsible for all fees associated with incorrect drop-off or overweight packages which will be deducted from the sellers earnings. Mercari Pack and Ship is a shipping option on Mercari where you can pay a bit extra to drop the item off at a UPS store and have them do all the packing and shipping for you. ,