When sellers use Simple Delivery and the buyer opens a case saying they have not received the item, Ebay deal with the case, refund the buyer, and pass the buyer's payment to the seller.
However, you would need to have proof of posting.
Do you have any proof of posting when you use a RM parcelbox?
Is that the point of your post?
If you use a RM parcel mailbox, there is no proof that you sent the item, so Ebay will expect you to refund.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)
