@robryk it's a business strategy. I bet the profit margins for the lowest tiers are too narrow to be useful, but is used to get initial customers.
@Demosthenes Are you saying that this strategy precludes the existence of such sanity checks, or that this might be an example of such a strategy?
I would doubt the latter in this case: the product costs ~1$, and you're really unlikely to be buying <10 unless you are a hobbyist.
@Demosthenes It's a 4mm banana socket. Thus, there is ~no lock-in and ~universal compatibility between ones produced by different companies.
Thanks, I haven't considered the "get hobbyists to like our thing" angle.
@robryk a banana socket? That is weird then, lol