I'm fairly certain they have a free trial, something like 30 days. Even if they don't, you can opt for a monthly plan for $12.99. If you like it, you have the option to change over to the yearly plan at any time. It does save you some money that way.I keep going back and forth whether to sign up for Amazon prime. I just haven’t been able to decide. We did upgrade our sams club membership so we get free shipping now and a few other perks.
I had Prime for years, then dropped it for a few years. Have recently opted for the monthly plan because they have a few things I wanted to watch on Prime Video and also needed to buy a few items with free shipping.
I do think the free-shipping angle is a bit overrated for me. Even without Prime, you can get free shipping on orders more than $25. That's pretty easy to do.