Indicators of bootleg DVDs:
1. Check their other items for sale. Small sellers (with a few hundred feedback) are selling everything new in large quantity (endless supplies so it is not a one-time gift). You have to wonder where they get their inventories. Stealing from big box stores? That is a crime. Counterfeiting? That is also a crime. Ebay is essentially online yard sales for small sellers. Have you been to a yard sale of new stuffs only? Almost never. As a rule, small sellers do not sell everything new. Also as a rule, authorized new DVD sellers do not only have dozens of listings.
2. Read their negative ratings. Very likely you see reports on counterfeiting. They have to start over to have a new account when there are a few such reports. That is why their ratings are rarely over 1000.
3. If you cannot resist the low price and order from them, very likely the DVDs are shipped from overseas because that is where they are counterfeit. The boxes are low quality, and more importantly, the discs skip or freeze.
4. You may think other people's loss is your gain but those scammers are not losing. You are losing because bootleg DVDs have no resale value. One advantage of buying DVDs over making subscriptions is DVDs can be resold. You can get some of your money back if you sell your authentic used ones.