These are most likely real. There was a pretty well recorded 2007 or early 2008 warehouse find of G1 Nightbeat cases: all in European (French / Dutch language) boxes (as these are). The only thing 'wrong' with the item listing is his statement that these are "extremely rare seen" versions. They are actually relatively common and regularly pop up on eBay, at around the price these are going for, BTW. They are indeed officially licensed Hasbro products, but re-released in China in 1995.
See
here for more info.
I've dealt with this seller before and he's dependable. I actually think he's the original finder, and he's been dripping these Nightbeats onto eBay since 2008 (check his feedback). Judging by his feedback, he also found a stock of Landcross'es, Road Caesar's and perhaps even some LioKaisers.
Looks like he's selling these from best quality to worse... So this might mean he's slowly running out of stock.