You are still protected by eBay's money back guarantee, even if the seller is no longer registered.
Here is what eBay says:
"What happens if I bought something from a seller who's been removed from eBay?
If you haven't paid for the item, you won't need to. The item should've been removed from your purchase history. We encourage you to look for a similar item from a different seller.
If you already paid for the item, please follow these steps:
eburtonlab
Mentor10 months ago@barry1345
You are still protected by eBay's money back guarantee, even if the seller is no longer registered.
Here is what eBay says:
"What happens if I bought something from a seller who's been removed from eBay?
If you haven't paid for the item, you won't need to. The item should've been removed from your purchase history. We encourage you to look for a similar item from a different seller.
If you already paid for the item, please follow these steps:
If you receive your item, but want to return it, you can request a refund."