You can do a search for "Is Prime Worth It" and there are a couple of journalist that break down average purchases vs using the free three day shipping. Unless

You can do a search for "Is Prime Worth It" and there are a couple of journalist that break down average purchases vs using the free three day shipping. Unless you purchase a lot of things and use a lot of services (video/music streaming) it doesn't seem worth the price for the average consumer. Most people lose money on it, but they stay subscribed because they've had it for years.