If she continues to use Amazon it’s probably in her best interest to be a prime member. No point in cancelling if you continued to constantly use Amazon.
95 quid is a lot, given that one delivery costs you at most 5 quid, and usually you can avoid that by having your order be over 35 quid or over 10 quid of books to qualify for free standard delivery. So there's quite a wide range of Amazon use where Prime is more expensive than pay-for-delivery-as-you-go, and I think a lot of people will fall into that category rather than the other two options of "such a frequent user that Prime is worthwhile" and "doesn't use the site at all".
I use Amazon at a rate slightly under break even for prime. I don't have it because I want the extra friction to get fast shipping. If I had it, I'd use it more. Now it's just one of many places to shop online (one with low quality control).
I find I get better delivery not being a Prime member. When I was using Prime, I would do their shipping, and the items would always be late. Now without it, I just choose the free shipping method, and things tend to show up a day early. Maybe just coincidence, but I've been much happier without it.
I highly agree. Everyone should stop using Amazon immediately. That was your takeaway right? If you hate the way a company takes away your ability to say no (removing your ability to say no dehumanizes you) you should sever your ties with them so they cannot profit from their bad behavior.
I hate to recommend it but Walmart offers free fast shipping.