The Multi-Orgasmic Couple: Sexual Secrets Every Couple Should Know
by Maneewan Chia, Douglas Abrams, Rachel Carlton Abrams Mantak Chia
HarperOne; Published: 2002; Unknown Binding; Book

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Vibrators: 100 of the Best Vibrators in the World
by Scarlet magazine
HarperCollins UK; Published: 2008-04-28; Hardcover; Book
Best price: $1.98
Price in other shops: $14.95

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The Modern Kama Sutra: An Intimate Guide to the Secrets of Erotic Pleasure
by Kamini Thomas, Kirk Thomas
Harper Element; Published: 2006-10-02; Paperback; Book

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Beyond the Kama Sutra: Discover and experience the Secrets of Erotic Ecstasy
by Eleanor McKenzie
Thorsons; Published: 2004-01-25; Paperback; Book
Best price: $4.95
Price in other shops: $18.95

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The Evolution Of Desire - Revised Edition 4
by David M. Buss
Basic Books; Published: 2003-07; Paperback; Book
Best price: $10.19
Price in other shops: $17.95

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A Chicken's Guide to Talking Turkey with Your Kids About Sex
by Kevin Leman, Kathy Flores Bell
Zondervan; Published: 2004-03-16; Hardcover; Book
Best price: $1.50
Price in other shops: $18.99

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Just Do It: How One Couple Turned Off the TV and Turned On Their Sex Lives for 101 Days (No Excuses!)
by Douglas Brown
Crown; Published: 2008-06-24; Hardcover; Book
Best price: $1.96
Price in other shops: $21.95

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America Unzipped: In Search of Sex and Satisfaction
by Brian Alexander
Three Rivers Press; Published: 2008-12-30; Paperback; Book
Best price: $7.89
Price in other shops: $13.95

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Hot to Make Love All Night: and Drive Your Woman Wild!
by Barbara Keesling
HarperTorch; Published: 1997-09-05; Mass Market Paperback; Book
Best price: $36.99

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How to Make Love Like a Porn Star: A Cautionary Tale
by Jenna Jameson
It Books; Published: 2010-02-01; Paperback; Book
Best price: $9.65
Price in other shops: $18.99