October ushers in spooky season and cooler weather, making it the ideal time to curl up with a good book. If you're looking for a new book or a boxed set to grow your collection, or perhaps as an affordable holiday gift for the book lover in your life, Amazon's October Prime Day is a great time to score bestsellers at bargain basement prices. Although October Prime Day officially runs Oct. 8 and 9, we're already seeing plenty of deals. You can score books and boxed sets for as much as 65% off right now.

From thrillers to chillers to books for younger readers, we've highlighted some of the best book deals on Amazon right now. And if you're looking for more great bargains on Amazon ahead of Prime Day, check out this roundup of our favorite deals under $50 and under $25. Word to the wise: many of these book offers -- as well as other Prime Day deals -- are only available to Prime members. If you've been thinking of signing up for a membership, check out these tips for getting one for free.

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• Tolkien Fantasy Tales boxed set: $15 (save $21). A four-book set perfect for anyone who loved The Lord of the Rings trilogy and wants to feed their Tolkien obsession. 
• Baby University complete 18-board book set: $97 (save $83). Stick a book in their chubby little hands, even if all they do is chew on it.
• Heroes of Olympus 5-book boxed set, 10th anniversary edition: $21 (save $29). Keep the whole Rick Riordan vibe going in your house with this 5-book box set that followed the Percy Jackson series.
• Homegoing by Yaa Gyasi: $8 (save $10). Don't pass up this award-winning novel that brings readers through the troubled legacy of slavery, following three sisters over eight generations, from the Gold Coast to Jazz Age Harlem.
• Banyan Moon by Thao Thai: $15 (save $15). Three generations of women are confronted with their family saga from 1960s Vietnam to the swamps of Florida, under the roof of their inherited home, Banyan House.
• Frank Herbert's Dune saga, 6-book boxed set: $52 (save $56). All six of Herbert's seminal science fiction novels.
• Intermezzo by Sally Rooney: $10 (save $33). Nab this NYT bestselling novel by acclaimed Irish author Sally Rooney for 77% off.
• The Nickel Boys by Colson Whitehead: $9 (save $6). The Underground Railway author's second prize-winning novel tackles the horrors of reform school and the implicit injustice of our justice system.
• Aru Shah and The End of Time (graphic novel) by Roshani Chokshi: $8 (save $5). The graphic novel version of the first book in the Pandava Series in which Aru Shah finds herself fighting against demons and on a quest to find the Pandava brothers, the heroes of the Hindu epic poem, the Mahabharata.
• Lucy Foley 3-book boxed set: $20 (save $35). Nab three of the most heart-pumping thrillers you'll read all packed up in a nice box set, perfect for that person who has already run out of mystery podcasts to listen to.
• Mexican Gothic by Silvia Moreno-Garcia: $8 (save $9). A horror novel that has shades of The Yellow Wallpaper but with twists and turns of its own.
• Foster by Claire Keegan: $13 (save $8). Irish author Claire Keegan is a master of place and in this short novel you will feel as if you are looking through someone's kitchen window watching it all unfold.
• George R.R. Martin's Game of Thrones 5-book boxed set: $26 (save $24). Fans of the show and fantasy-lovers alike will devour every last word on these pages.
• Shadow and Bone series by Leigh Bardugo 3-book boxed set: $17 (save $16). Perfect for teen readers who are ready for a little more blood and guts than Rick Riordan.
• The Wild Robot by Peter Brown 3-book boxed set: $40 (save $14). Get this series in hardcover and gift it to the person you want to go see The Wild Robot movie with.
• Sing, Unburied, Sing: A Novel by Jesmyn Ward: $8 (save $9). A National Book Award winner, Ward's second novel follows a family through rural Mississippi.
• The Jane Austen boxed set: $33 (save $18). Pride and Prejudice, Emma, and Sense and Sensibility in a hardcover set designed by Rifle Paper Company, perfect for Bridgerton fans.
• Where They Last Saw Her by Marcie Rendon: $22 (save $6). When a Native woman on the Red Pine reservation in Minnesota becomes fed up with the injustice of missing Indigenous women, she takes matters into her own hands in this compelling stand-alone crime novel by Marcie Rendon, author of the Cash Blackbear series.
• From Crook to Cook: Platinum Recipes from Tha Boss Dogg's Kitchen by Snoop Dogg: $9 (save $16 with on-page coupon). This hardcover cookbook will give you everything you ever wanted in a cookbook but were afraid to ask for.
• Between Two Fires by Christopher Buehlman: $17 (save $2). Genre-bending Southern gothic horror fiction, anyone?
• More critically acclaimed titles discounted by as much as 65%.

Don't miss our other Prime Day savings on items under $100 and the best Amazon devices on sale right now.