I received a call from a very frustrated eBay PowerSeller about a glitch that is causing PayPal to undercharge customers for eBay purchases. The PowerSeller uses a third-party checkout system and has had to basically shut off PayPal payments all day.
PayPal spokesperson Michael Oldenburg said, "I can confirm that there is a known issue that is occasionally causing buyers to be charged incorrectly for shipping fees through PayPal when paying for items on eBay. Our technology teams are working to further investigate and correct the issue as fast as we can. At this time, we believe that the issue is limited to a subset of transactions where the seller is using a third party checkout provider on eBay."
I haven't seen reports of the problem on discussion boards other than on one third-party vendor forum. But sellers should remain diligent in cross-checking payments received with invoices.
BTW, here's another one someone sent me regarding expected shipping times - looks like on the winning bidder emails eBay sends to buyers it sometimes reads, "Estimated delivery: Varies (This Shipping Service delivers within -1 day after seller ships item) Shipping & Handling: Standard Flat Rate Shipping Service."