Not only will you get all your money back but they will make the seller provide you with the shipping label.
I would have contacted eBay and file a claim with them, instead of PayPal. But both are equally good at protecting the buyer.
I had a similar experience when I bought a vintage stereo receiver from eBay seller. It was advertised as being in mint condition
but when I got it, it was a peace of junk and would require complete overhaul to bring it to good working condition.
First thing I did was to contact the seller and offered that I will pay the shipping and all I wanted was my money back. He replied that he will accept the return only under one condition.
He wanted me to give him a positive rating before he accepts the return. I refused, as it is against the eBay rules to demand a positive rating. It’s called Feedback extortion.
I told him that and that I will give him appropriate rating only after our transaction is completed, but he refused again.
Mind you, all our communication was done through eBay email server! When I contacted eBay to file a claim, they took one look at our emails and within a few hours
determined that I will get all my money back plus seller has to provide and pay for a shipping label for the return.
He did not respond to their request for the shipping label and after 5 or 6 days eBay returned my money back on PayPal account plus told me that the
case was now considered closed and that I can keep the item now as the seller did not follow eBay's request.
You should have no problem getting all your money back and a return shipping label.