[doublepost=1539314863][/doublepost]I’m not sure what you mean by justifying $50 cosmetic watch bands. Obviously you can’t wear the watch without a band. But I doubt Apple spends much time or resources supporting 3rd party watch bands. Not at all comparable to a watch face App Store that would need to be curated/maintained by Apple.
Well someone said, "Who'd pay for Watch faces?". So I pointed out that paying for cosmetic items is not only the norm in every other form of digital content, but it's also the norm for the Apple Watch - we do it with Watch straps. So why is it daft to pay for cosmetic items, except expensive Watch straps?
A digital store that has cosmetic downloads is absolutely 100% comparable to an online store. Apple already deal with this problem with various online stores. The "problem" of watch faces is such a non-issue that everybody already solved it decades ago, including Apple.