Disputes suck. Sorry to hear about this ant68 and rvdv
Given you both are posting in a public forum, seems like you are inviting neutral third party commentary, otherwise I would remain silent, but I’ll chime in instead.
Seems like you will both lose something here, and only options are:
Ant68 pays full amount - stop the chargeback - and keep the game. If you want to keep the game, don’t do a dispute and put rvdv through this. You don’t get to decide a new price to pay.
OR
Ant68 gets full game purchase amount back and rvdv gets his game back. Rvdv has already lost as his game is in Australia and he has a headache. Ant68 has lost on shipping costs. It is what it is and sucks for both.
But keeping the game and doing a partial or full charge back is a scam by ant68.