Practically every Winter Classic Jersey on ebay is fake. It's not just that particular seller your talking about.
Notice how the tie/string/shoe lace (whatever it is) is white. The NHL sold the jerseys with blue string, not white. There also is a Reebok logo missing from the right arm, the actual jerseys were sold with a Reebok logo located on the right arm.
Notice how the jersey says “MeiGrayGroop”, it’s spelled WRONG…lol. It should be spelled MeiGrayGroup. Then you may notice that it says Game Worn Jersey. There was only 1-ONE Winter Classic game. Almost all the jerseys on eBay have this tag which says Game Worn Jersey, which isn’t plausible. There are hundreds of jerseys on eBay that have this tag saying it's Game Worn Jersey, and it isn't possible because they’ve only played in these jerseys once. All of the jerseys I’ve seen on eBay are numbered with E05768 which is even more proof that they are fakes. This picture also shows a fight strap. The NHL ONLY sold replicas of the Winter Classic Jerseys. They never sold the jerseys with the fight strap.
Notice the beige color of the penguins logo. It should be mustard yellow, as shown in the REAL Winter Classic Jersey shown above.
If you do a search on eBay for a Penguins Winter Classic Jersey or the New Reebok Edge Jersey you’ll notice that more than 95% of the jerseys are fake.