You can't just assume people to give away their stuff for free. I'm a huge download leech myself, but I have always understood people who sell stuff and my opinions about them are 100% positive. What I haven't understood is why people share stuff for free (Thank God for those people!).
There's no such thing as a rare Queen DVD
Official Queen DVDs are mass produced and heavily advertised.
Bootleg Queen DVDs are produced in large quantities to keep costs down.