Best Buy offers a $100 iTunes Gift Card for $85 with free shipping. That's tied with our July mention and is among the best deals we've seen for an iTunes credit. (It's a current price low for this denomination of gift cards by $9.)
Johnny Aloha offers downloads of Johnny Aloha's Lavapalooza MP3 Album for free when you register your email for the mailing list. (You can unsubscribe at any time.) That's the best deal we could find for this album that features covers of artists such as Katy Perry, Coolio, Weezer, Guns N' Roses, and B52s. (iTunes charges $6.99 cents.)
Google Play offers downloads of Kaskade's Atmosphere MP3 Album for $1.99. (Amazon charges the same.) That's $8 under what iTunes charges for a similar album featuring one additional track and a music video.
Of note, at Amazon, some of the individual MP3s are available for free for Prime members.
We may be living in a digital world where you can hold thousands of albums in the palm of your hand, but an ever-increasing portion of the listening public is eschewing the convenience of MP3s for a seemingly anachronistic format: the vinyl record. If you're ready to go retro, make sure you know what to look for when buying a turntable.
Google Play offers downloads of Matt Nathanson's Live at Google MP3 Album for free. Although Google Play is the only merchant offering this 11-track album, it's $6 under the 7-track live album that iTunes offers.
Google Play offers a selection of tracks from Dischord Records for free. (iTunes and Amazon charge 99 cents or more for most of these tracks.) It features songs from influential hardcore/punk groups such as Fugazi, Jawbox, Lungfish, and more.
Google Play offers downloads of its August Antenna 18-Track MP3 Sampler for free. (iTunes and Amazon charge 99 cents or more for most of these tracks.) It features songs from "up-and-coming" artists such as Parquet Courts, Beverly, and Twin Peaks.