> If a child goes through the checkout at the grocery store with cash, can the parent march in and demand a refund because "he's underage so the contract is void"?
Depends on the jurisdiction, of course. But for example in German law, the contract is not void exactly because and only if it was about daily necessities of low value - the law does, in fact, care very literally and explicitly about those details. So it's completely unfit as an example to generalize, and the contract with AWS would in fact be void. Their problem if they don't verify users' identities and age sufficiently - and it's almost certainly a deliberate business decision not to do that in order to reduce friction. and occasionally write off an unenforceable bill as cost of doing business.
Well fair enough, although I find that rather surprising. If I understand you correctly selling anything more expensive than cheap food to a child carries a high degree of risk in Germany.
Then again, maybe making it impossible for a child to pawn expensive items for cash isn't such a bad idea. At least there shouldn't be any loopholes given the way Germany went about it.
Can a German child buy non-essential expensive things, like a concert ticket, console, Warhammer or whatever? (Or a video game, back when those were sold in shops.)
I bought these things while a child in the UK. I'm sure Games Workshop would have offered a refund on something unopened if my parents had demanded it, but I'm fairly sure the ticket agency would not.