Without thinking I renewed my son's student Amazon Prime this year for $39. Within a week I regretted it. I should have let his expire, gotten my own Amazon Prime with streaming for $79 and ditched Netflix. I believe we can cancel his subscription and get a prorated refund but I don't know that I want the hassle. I'll probably just wait until next summer to let his expire and do it then.
My kids get all their textbooks there. My hs son is notorious for letting me know 3 days before he needs a book for AP Comp. The local stores are usually sold out by then and I have zero desire to go zipping around looking for it when I can get it shipped for free from Amazon. I can also find things there I can't find elsewhere, or that are out of stock at my local stores. I've been known to ship things to S2 at school when he mentions a noisy first year dorm (earplugs), or recurrent bloody noses (aloe saline nose spray). It's far less expensive then me getting something locally and shipping off a package. Yes, I could let him fend for himself, and in the vast majority of ways he does, but a mother is allowed a bit of 'mothering' now and then. If sending saline spray via Amazon at 2am makes me feel better so be it.