Amazon offers Prime members Avatar The Last Airbender: The Complete Book 1 on DVD (pictured), Avatar The Last Airbender: The Complete Book 2 on DVD, and Avatar The Last Airbender: The Complete Book 3 on DVD for $17.99 each with free shipping. (Non-members can spend over $25 for free shipping; otherwise, it adds $2.98.) That's the lowest total price we could find for each volume by at least $5. Book 1 features 20 episodes on six discs, Book 2 has 20 episodes on five discs, and Book 3 includes 21 episodes on five discs.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months.