Impatient seller that packaged card improperly
I recently bought a 160 euro card on cardmarket and it got delivered today. When I got the letter the letter had a visual dent in it and the card was packaged very poorly. The seller put the card in a used and crumpled up penny sleeve (which was placed in the same orientation of the toploader) which he put in a toploader (that arrived with a big dent in it). This was just shoved into a envelope with some printer paper surrounding it instead of cardboard or a postcard (something sturdy which offers protection).
I tried to explain the issue with the seller and resolve it properly but now he is basically telling me that he didn’t package it properly because I chose the cheapest shipping option. This is something he in my opinion could have contacted me about before shipping the card out if this was a valid concern. The cheapest shipping option was a tracked letter that I paid 15 euros for but on the shipping label I can see that the shipping costs only were 3 euros.
I am off the opinion that I shouldn’t have to pay the shipping return costs seeing as it is his fault that he didn’t package the card properly which caused the card to arrive in a worse condition.
He now has become passive aggressive about the situation and says he will stop responding to my messages if I don’t chose one of his ultimatums:
-Get a 50 euro refund.
-Pay 20 euro in shipping costs to return the card to him.
I am severely confused what to do in this situation. Has anybody had a similar experience with a seller and if so how did you resolve it?