Back when I did a lot of computer repairs (a decade or so ago) it was worth paying for Prime as the delivery speed was worth the cost and if it didn't arrive when promised they'd give you a free month's subscription on top. That happened once or twice. Prime Video was in its infancy but was a nice bonus.
Nowadays I have stuff delivered to my nearest Amazon Locker which is free, assuming the package isn't too big to fit, and I find delivery times are quicker than promised; often 2 days and no more than 3.
My wife still has Prime on her account and things often seem to arrive later than expected and you get ads when streaming now. I personally wouldn't entertain paying for it, but I don't so it's fine lol.