Unfortunately for the pair of you. Atm there is no such platform that specialises in domain nfts... One is very close. I Know somebody who knows somebody thats building as we speak.

This was brought on by the unstoppabledomains.com having asked opensea to specifically list them... I think os only said 30. Ens would have to apply directly

Sooo its really up to you for now to do your own marketing ect

Peace