Hi,
Thanks for the message - you;d have to request a shipment and have the cards sent back to the eBay seller. And, you can have the eBay seller include your shipping fees as part of the refund.
And, we use the industry standard terminology when it comes to the COMC Condition Review. The Review is based on the observations of the Review team, so there's always a range given to the card, and this means that the card would be somewhere within the Excellent-Mint range. It'd be great of it was a little more specific, but that't not what the COMC review does. it's just to give you an idea of the card's condition, it's not meant to be precise.