Go to the bottom of this page and click on Contact Us. In the pop-up that appears select See More. There you should see the option of requesting a call back from an agent. https://www.ebay.com/help/selling/shipping-items/labels-packaging-tips/buying-printing-shipping-labe...
Or, you can try another service like Pirate Ship to purchase a label. You can sign up for free and still get the commercial discount. Just remember to upload the tracking number to eBay. You'll just have to pay out of pocket.
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Never sell anything on eBay that you can't afford to lose.
