As a North American seller our items are in the U.S. Format which for DVDs is Region 0 or 1 and for Blu Rays Region A. If an item is in a different format it will say so in the title and the description. A typical such listing would be
(Title) Region 2 PAL DVD or
(Title) Region B Blu Ray
In the description you would see:
You will need a multi region player to play this item. It will not play on machines made for the U.S. Market.
Be sure you can play the discs you before you get them!