Looking thru their details on the movies they state that they are region free which tells me they are from China. These are most likely bootleg copies which not only will get you kicked off ebay but could also have some legal ramifications. I would advise you to stay clear of them.
Might want to check out Mountainview Movies, Link hidden: Login to view - They are a trusted and verified site on SaleHoo and are a great source of DVD's too!