Unfortunately, no. You just have to research the seller and ask questions. There is a blacklist of scammers in this website.
If you bought it through Paypal, open a dispute. You might be able to get all or some of your money back. Beware if the seller offers you a full refund if you send the player back at YOUR cost. Chances are you won't see your money or another player again.
There is also a link to sign a petition against eBay and their practices of allowing hacked players to continue to be sold.
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 ops: 1GB Black Hacked Chipod ops:
2 GB Black Temptation Player 
8) WHITE MEIZU M6 8GB 8) |