@lp2cd
Please provide a more specific reference regarding the illegality of disposing-- for profit or otherwise-- of an original CD after making a digital copy for personal use. The RIAA seems to be vague on this point.
http://www.riaa.com/resources-learning/about-piracy/
It is clear that it is illegal to sell copies, but I see nothing regarding prohibition on resale of the original-- which is not only protected by fair use, but also by legal transfer of ownership. The issue of reselling an original appears never to have been litigated, and the legal blogs I see on the subject are full of controversy. The Betamax and Groakster cases and a 2013 Supreme Court decision protecting the resale of textbooks seem to be the principal precedents. At this point the resale of an original appears to be legal arcana.