The guy seemed a little bit off and he has quite a few negative reviews but I didnt see anyone complaining about overdue postage. Please make sure that you choose the correct label so your item arrives safely to the buyer. Shipping carriers charge based on the package's weight and size. Sellers are responsible for all fees associated with oversized packages or packages with incorrect dimensions which will be deducted from the sellers earnings. Reply EmoFruitLooop Additional comment actions I know, I've already done that. I didn't have a formal receipt but they refunded it within 24 hours. 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. He provided the following charts showing the old and new rates. She said next time, make sure you weigh it properly or else I won't scan it. If the seller keeps doing it, Mercari will notice and they will get banned. Click here to find the nearest FedEx drop off location. First: share to improve GetHuman-heidi_da's odds . That breaks down to a 10% seller fee and a 2.9% + $0.30 payment processing fee. Usually you would get a notice in your mailbox that there is a package waiting at the PO for you with postage due and you would have the option of accepting it or refusing the package. Additional shipping fees will be deducted from your Mercari balance. 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. 06:02 PM. Where to Get Shipping Mercari Shipping Boxes [CDATA[ document.write ("