Amazon does too, of course, but until now its accepted goods in just four categories: Books, video games, movies & TV, and electronics. But there's good news for those of us with dusty stacks of audio CDs: Amazon will now take your discs as well.
To submit a CD in exchange for an Amazon gift card, go to the retailer's Trade-In site, select the "Music" category, and enter the artist and/or album name you'd like to trade.
In my test, Amazon offered $4.50 for a two-disc "Marvin Gaye Anthology" in "good" shape, or $4.95 for an "Anthology" set in "like new" condition.
I could try to sell my CDs individually, but it's not worth the time or trouble. It's easier to print a UPS mailing label supplied by Amazon (shipping is free), stuff my CDs in a box, and send them off.
There's one caveat, though: After examining my CDs, Amazon may decide they're worth less than the agreed-upon price, in which case they'll return them to me at no charge. (When you first accept Amazon's offer, you can decide whether to accept a lower price if Amazon deems your trade-in to be worth less, or just have the item(s) returned to you.)