Very strange feedback. Also the telltale sign of having multiple different backgrounds for his listings. Meaning he probably stole the images from somewhere else. Might be able to find them with a reverse image search.
What I don’t understand is why scammers do this. Do they just hope you can’t be bothered to claim a refund? Because I’m pretty sure eBay will always side with the buyer in blatant scams like this. Seems like a waste of time.
A lot of times they use hijacked eBay/Paypal accounts that no longer have paypal hold times. They send the funds to bank accounts either hijacked, newly created under false identities, or whatever and cash them out quickly. By weeks later when all the claims and refund requests come through they are long gone with the cash and eBay/Paypal/credit card companies are left holding the bag. They then pass these losses onto the consumers like us who buy and sell properly via higher fees. Same way at a brick and mortar store they have to fluff up pricing some amount to account for losses and theft.
Good rule of thumb: anything that seems too good to be true, usually is. Garage sales are your best bet for great deals. I think a lot of people realize Pokemon cards are valuable and want the most they can get. If someone needs money and is liquidating their cards on eBay, you’ll have a chance to get a good deal. Just have to hope no other people are watching/bidding. You could send them a message make an offer depending on what you want.