My husband has it and my mom unintentionally had it too and she cancelled it and we told her she can use our account if she needs to order anything. It comes with benefits like free shipping, you can buy things regular Amazon members wouldn't be able to buy, you get some free ebooks to read and free audio books, you get Amazon Video. I don't use it much because lot of the videos you still have to buy or rent to watch.
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Son: Diagnosed w/anxiety and ADHD. Also academic delayed and ASD lv 1.
Daughter: NT, no diagnoses. Possibly OCD. Is very private about herself.