Is Selling P90x On Ebay Illegal Is It Illegal To Make Copies Of P90x Dvd's And Sell Them On Ebay.?

Is it illegal to make copies of p90x dvd's and sell them on ebay.? - is selling p90x on ebay illegal

Not done in I just saw that people are online in China P90X copies of DVDs and selling them at wholesale prices for people in the world, the THW is illegal in the United States