Given the price of CD's, this is the _only_ way to accumulate a decent collection unless you're wealthy. If the RIAA and similar slime have their way, selling CD's second-hand will soon be illegal. Lending them to your friends will be illegal. Your only choice will be to buy them new, at $17-20 each, for what might be 38 minutes of mediocre music.

One advantage of second-hand music stores is that the staff sometimes actually know their music. Unlike the pimply teenagers at the mall outlet who think Puff Daddy invented rap music. So no worries about asking for Mojo Nixon, only to get "No man, he don't work here!" in reply...