Amazon is running a buy two, get one free promotion on books, vinyl records, and CDs. The mix ranges from children's board books like Llama Llama Red Pajama at under $5 to vinyl releases such as The Beatles' Rubber Soul Super Deluxe set at $132 and AC/DC's Back in Black on vinyl at $26.  Shop Now at Amazon

At Amazon, get this World War II Map by Map Book for $16. It's the best price we could find by $21. At nearly 300 pages, it covers World War II through a map-by-map format. Buy Now at Amazon

At Amazon, get the Dune Deluxe Hardcover Edition for $16. That's $10 less than the price that Target currently charges. Shipping is free for Prime members. Buy Now at Amazon

The food in Studio Ghibli films has always looked delicious and now you can recreate some of the recipes from these classics with The Unofficial Ghibli Cookbook. At Amazon, it's currently $24, beating prices elsewhere by $12. Shipping is free for Prime members. Buy Now at Amazon

At Amazon, get this Sailor Moon Vol. 1-6 Manga Box Set for $44. It's the best price we could find by $34. It includes all six volumes in one collection, along with 16 collectable art cards and a holographic gift box. Buy Now at Amazon

Update: The price has dropped to $27.82 since this was originally published.

At Amazon, get the Batman/Superman: World's Finest: Deluxe Edition Vol. 1 Hardcover for $30. It collects the first 11 issues of Mark Waid and Dan Mora's ongoing run of World's Finest. Shipping is free. It's the best price we could find by $20. Buy Now at Amazon

As part of Amazon's Prime Big Deal Days event, you can grab a 3-month subscription to Kindle Unlimited for free. It usually costs $11.99 per month. It's the first time we've seen this offer since June. This deal ends October 8. Shop Now at Amazon