May be a more major point in the days of Ebay - go out buy a CD on the cheapest store you can find, copy it at bit-perfect quality, sell it on Amazon or Ebay and probably make a profit; I'm sure it happens all the time these days - otherwise how do individiuals sell so many second hand CDs and DVDs ?
Aside
I can't believe some of the second hand prices people pay on Ebay and Amazon - I'm sure some people switch off their brains. I remember watching an auction I was interested in once for a DVD and I stopped bidding at £2 short of the cheapest price I could buy it for new, but the auction went on and someone paid twice as much as the new price !!!
One further thought about AllofMP3 - it is really useful for older CDs that are no longer available, and I don't have any reservations about copyright: if you
can't buy a CD in the shop you aren't doing any harm to the artists whatever AllofMP3 do re. royalties. I have certain found a few deleted classics over there.