The Amazon MP3 Store offers 100 MP3 albums for $5 each. Apply this $2 credit to drop one to $3. We couldn't find a lower price for any of these elsewhere. (Many of these albums are $10 on iTunes.) Offer ends October 31. Notables, after the credit:

• She & Him's A Very She & Him Christmas (pictured) for $3
• Styx's Greatest Hits for $3
• Coldplay's Parachutes for $3
• Elizabeth & The Catapult's Taller Children for $3
• see all discounted MP3 albums at Amazon