A friend texted this over today- first time I'm hearing about a scam like this. Anyone experience anything similar?

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Has anyone caught wind of eBay buyers claiming their cards haven’t arrived and then demanding (and getting) refunds? It’s been happening to be a lot lately, only on cheap cards. It used to be only cards I sent through the regular mail in a PWE, but today a buyer claimed the PSA-graded card he bought wasn’t in the packaging when he got it in the mail.