Amazon quietly made a big change to its Prime service this week, allowing some customers to subscribe on a monthly basis rather than committing to a full year. The service, which includes free two-day shipping and free streaming of movies and TV shows in Amazon’s library, normally costs $79 for a year’s commitment. The monthly option will cost $7.99, which comes to $96 annually. But paying a premium of $1.50 a month is sure to appeal to customers who don’t necessarily want to commit to a full year of the service. And the $7.99 pricing puts it on even footing with competing streaming services Netflix and Hulu Plus — both of which have more robust streaming libraries than Amazon, but can’t offer benefits like free Amazon shipping. Read the full story at Daily Finance.