Heads up, PayPal users. As of May 7th, PayPal will no longer refund processing fees when sellers offer either partial or full refunds to their buyers. PayPal's inextricable connection with eBay and other community-based commerce sites like Etsy make it an easy go-to platform for sellers looking to manage purchases. Refunds have always been an important and unavoidable facet of the average seller's business.