I do this frequently, the use case is ordering things for my father, who's certainly capable of doing this on his own, but since I buy so much stuff from Amazon, starting a year after they opened, it's the most convenient way.

Only difference is I'm in the US and charging it to a credit card of his. And a Prime account is not required (we recently split the difference on getting one). And if they're looking for fraud, that we have the same last name, and his billing address is about a mile away, could reassure them.