Exactly what I wanted
Despite a few technical hickups, support was kind and quick and helped me out. Eventually the result was delivered quickly and I'm very happy with how it turned out. They're properly magnetized, but of course they're not junkyard magnets - so don't expect too much from printable(!) magnets. I am happy! Producers of these are few and far between and this was an excellent experience, despite the hickups. And may very well order more.