My arguement would be that as I buy my postage through ebay, you can see exactly when I have bought the label, especially as it rather unhelpfully adds the barcode number to the sale page where the tracking number should go. I then take my post to the post office and hand it over to them and in exchange they give me a time & date stamped proof of posting as physical evidence of the transaction. When I get a late delivery defect for an item which I can prove was posted on time, ebay just ignores the evidence I provide. I cannot be the only person in this position. It should be remedied.