During Prime Day, Prime members can get a three-month subscription for free—even if you were a previous subscriber.
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Here's how to get your first 2 months of Kindle Unlimited for just $5
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Is Kindle Unlimited Worth It? One Reason It May Not Be for You
Prime Members get a free 3-month subscription to Kindle Unlimited
Get 60-day free trial of Kindle Unlimited with this simple trick – Ebook Friendly
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Anyone know if Kindle Unlimited is worth getting? : r/kindle
How to Access Free Books with an Prime Membership