This, ebay sides with the buyer unless the seller has solid evidence of scumery.

My MiL is a seller and the shit buyers will pull to get a free item or discounts or whatever. It’s disgusting.

Stay within Ebay.

If you need assistance, get in touch with Ebay and explain everything. Get proof. Go through the proper processes. They’re very good at sorting shit out, it may take a week or two though.

If the seller scams you, legit or by accident, Ebay will most likely side with you and you’ll get your money back.