I had prime for years but they kept jacking up the prices and I realized that i wasn't interested in 95% of their streaming options. I think it hit $129 a year when i decided to cancel it and see how much i spent on shipping.
I was surprised that even without Prime, amazon often offers free shipping just a few days slower.
Figure I might spend $30 this year on shipping from amazon and get things almost as fast. I mainly order books so I don't really care when they show up.
I'd rather spend that $129 for prime at local used bookstores and help keep them in business.
I also found that without prime i order less useless impulse buys......so that alone has probably saved be a few hundred dollars already. "Hey look...a deep sea diving helmet.....FREE SHIPPING!"