So a seller can cancel your order without having a valid reason or advising you why it was cancelled, and you have to wait for Pay Pal to refund you the money and that's that?

Note: I ordered item, paid same day, then seller cancels order suddenly. I had not messaged them or anything. You are saying they are allowed to do this if they still have stock of the item?

This is the first seller I have had any issues with in over 15 years of buying on eBay.