Street DVDs

So suppose someone wanted to buy some DVDs, perhaps these DVD would not necessarily be original, maybe it would be possible to, say get the whole StarTrek and Friends 10 Seasons for about 100RMB ($14). Not that I am condoning this type of purchase - I likely could be done and still you would think that you were ripped off. I have heard that the base price for the DVD is 5 RMB ($0.70). Not that it would be so likely that both box sets might be sitting next to each other in the cart on the side of the street, I still think that 100RMB each is still too much, but anyway maybe someone would buy them...