If you do a lot of shopping through Amazon (and I do a WHOPPING amount!) it’s definitely worth it. I get cat food by the case from amazon, vitamins for me and my dogs, i.d. tags for my kitten (who keeps losing collars), office supplies, tea, shoes, hearing aid batteries, and plenty of other stuff, including, but not limited to books. I also send gifts. The prices can be excellent. With the two-day shipping, the stuff just shows up on your doorstep sometimes quicker and definitely with a lot less trouble than if you had gotten in the car and driven somewhere to buy it.
I have an Amazon rewards card and get extra points if I buy through Amazon. Since I put EVERYTHING in my life on my credit card (and pay it off every month), the points really add up. I got a carpet for my living room, a fancy-schmancy water thing that keeps water hot all day for tea, a juicer, some beautiful presents for people— all for “free.” (I don’t need a frequent flyer miles card, as I never go anywhere.)
Many of my friends don’t use Amazon for anything except books, and they never even think to look there, which mystifies me. Someone will say, “I went all over town looking for <some product>, but I couldn’t find it.” And I’ll ask if they looked on Amazon. Duh.
And the Amazon reviews are tremendously helpful. Many, if not most, reviewers are as smart, literate, and thorough as the posters here
and they will tell you, “I love this product,” or “It fell apart after a week.” Some will write incredibly long, detailed reviews, with videos even.
ETA: Okay, in my enthusiasm, I veered off the Amazon Prime topic. Sorry. I find Amazon a tremendously useful site.