> It's just that there's no indication of what's a premium feature and what's not

This behavior drives me nuts, and I leave anywhere I see it and I can. It is just so hostile and obnoxious. I don't mind people wanting money for things, but this sort of thing immediately gives me the feeling of interacting with an adversary, that I need to consider implications and watch for double-crosses.

It is really weird to me that people design their stores to feel untrustworthy and sneaky, but I guess it works well enough to keep them at it.