Don't want to one-up you for the sake of it, but last time I bought bootleg DVDs in China, I paid Y5.50 (about 80 US cents). The better prices will be outside of the main markets populated by foreigners - the guy I bought from was on the top floor of a market geared to only locals. Prices increase as you go out from there - foreigner markets in Beijing and Shanghai, then eventually other popular places like Vietnam, Thailand, Bali, etc.