Kyle points out that Amazon is doing a sale with five full cd downloads for $1.99 each through Cyber Monday. The albums change every day, and today's include Gorillaz Plastic Beach which is phenomenal.
Plus they're offering $3 in credit toward mp3 downloads.
So it's frickin' free...plus you'll have a buck left over.
Update - Holy crap, now it's Vampire Weekend's Contra for the same price. Seriously, you should go buy yourself some music for free.