There are four new add-on subscription options to expand your Amazon Prime Video library. The first is Motor Trend OnDemand, which offers motorsport shows like Roadkill, Dirt Every Day, and Head 2 Head. That subscription will run you $4.99 per month. Next is technology, media, and entertainment news from Cheddar for $6.99 per month. Filmbox Live is a $4.99 per month subscription that will give you access to hundreds of indie and arthouse films. Last is The Great Courses Signature Collection, which released a Fire TV app earlier this year. The $7.99 subscription provides numerous educational videos covering science and art. All four of these new add-on subscriptions come with a 7-day free trial.