For a limited time, you can get a 3-month subscription to Amazon FreeTime Unlimited for only $0.99. After the 3-month period, the monthly subscription for a single child (with Amazon Prime) is $2.99 or $6.99 for a family.
Unlimited access to thousands of kid-friendly books, movies, TV shows, educational apps, and games.
Be sure to check out all the Amazon deals that I've been posting for some great deals
Please note: Amazon prices tend to change quickly, so be sure to check the price before you buy.